errpy 0.0.10

Error log

The package failed to build. The error log from opam follows.

Opam plugin "depext" may require upgrading/reinstalling. Reinstall the plugin on the current switch? [Y/n] y
The following actions will be performed:
  - recompile opam-depext 1.2.3

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved opam-depext.1.2.3  (cached)
-> removed   opam-depext.1.2.3
-> installed opam-depext.1.2.3
Done.

<><> opam-depext.1.2.3 installed successfully <><><><><><><><><><><><><><><><><>
=> opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead
# Run eval $(opam env) to update the current shell environment

<><> Carrying on to "opam depext -viy errpy.0.0.10 stdlib-shims.0.3.0 sexplib0.v0.17.0 ppxlib.0.33.0 ppx_deriving.6.0.2 ppx_derivers.1.2.1 ocamlfind.1.9.6 ocaml-compiler-libs.v0.12.4 dune.3.16.0 cppo.1.7.0 conf-rust-2021.1" 

Since version 2.1, opam now handles external dependencies alongside OCaml ones, and the `depext` plugin interface is provided for backwards compatibility only. Consider using your usual `opam install` command to install both OCaml and system dependencies, or `opam install <pkg> --depext-only` if you want to only install external dependencies.
# Detecting depexts using vars: arch=x86_64, os=linux, os-distribution=debian, os-family=debian
# The following system packages are needed:
cargo
[NOTE] Package dune is already installed (current version is 3.16.0).
[NOTE] Package ocamlfind is already installed (current version is 1.9.6).
The following actions will be performed:
  - install conf-rust-2021      1
  - install ppx_derivers        1.2.1
  - install sexplib0            v0.17.0
  - install ocaml-compiler-libs v0.12.4
  - install cppo                1.7.0
  - install stdlib-shims        0.3.0
  - install ppxlib              0.33.0
  - install ppx_deriving        6.0.2
  - install errpy               0.0.10
===== 9 to install =====

The following system packages will first need to be installed:
    cargo

<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>
Let opam run your package manager to install the required system packages?
(answer 'n' for other options) [Y/n] y
+ /usr/bin/sudo "apt-get" "install" "-qq" "-yy" "cargo"
- debconf: delaying package configuration, since apt-utils is not installed
- Selecting previously unselected package libpipeline1:amd64.
- (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 18764 files and directories currently installed.)
- Preparing to unpack .../libpipeline1_1.5.7-1_amd64.deb ...
- Unpacking libpipeline1:amd64 (1.5.7-1) ...
- Selecting previously unselected package binfmt-support.
- Preparing to unpack .../binfmt-support_2.2.2-2_amd64.deb ...
- Unpacking binfmt-support (2.2.2-2) ...
- Selecting previously unselected package libpython3.11-minimal:amd64.
- Preparing to unpack .../libpython3.11-minimal_3.11.2-6+deb12u3_amd64.deb ...
- Unpacking libpython3.11-minimal:amd64 (3.11.2-6+deb12u3) ...
- Selecting previously unselected package python3.11-minimal.
- Preparing to unpack .../python3.11-minimal_3.11.2-6+deb12u3_amd64.deb ...
- Unpacking python3.11-minimal (3.11.2-6+deb12u3) ...
- Setting up libpython3.11-minimal:amd64 (3.11.2-6+deb12u3) ...
- Setting up python3.11-minimal (3.11.2-6+deb12u3) ...
- Selecting previously unselected package python3-minimal.
- (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19093 files and directories currently installed.)
- Preparing to unpack .../python3-minimal_3.11.2-1+b1_amd64.deb ...
- Unpacking python3-minimal (3.11.2-1+b1) ...
- Selecting previously unselected package media-types.
- Preparing to unpack .../media-types_10.0.0_all.deb ...
- Unpacking media-types (10.0.0) ...
- Selecting previously unselected package libpython3.11-stdlib:amd64.
- Preparing to unpack .../libpython3.11-stdlib_3.11.2-6+deb12u3_amd64.deb ...
- Unpacking libpython3.11-stdlib:amd64 (3.11.2-6+deb12u3) ...
- Selecting previously unselected package python3.11.
- Preparing to unpack .../python3.11_3.11.2-6+deb12u3_amd64.deb ...
- Unpacking python3.11 (3.11.2-6+deb12u3) ...
- Selecting previously unselected package libpython3-stdlib:amd64.
- Preparing to unpack .../libpython3-stdlib_3.11.2-1+b1_amd64.deb ...
- Unpacking libpython3-stdlib:amd64 (3.11.2-1+b1) ...
- Setting up python3-minimal (3.11.2-1+b1) ...
- Selecting previously unselected package python3.
- (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 19503 files and directories currently installed.)
- Preparing to unpack .../00-python3_3.11.2-1+b1_amd64.deb ...
- Unpacking python3 (3.11.2-1+b1) ...
- Selecting previously unselected package libhttp-parser2.9:amd64.
- Preparing to unpack .../01-libhttp-parser2.9_2.9.4-5_amd64.deb ...
- Unpacking libhttp-parser2.9:amd64 (2.9.4-5) ...
- Selecting previously unselected package libmbedcrypto7:amd64.
- Preparing to unpack .../02-libmbedcrypto7_2.28.3-1_amd64.deb ...
- Unpacking libmbedcrypto7:amd64 (2.28.3-1) ...
- Selecting previously unselected package libmbedx509-1:amd64.
- Preparing to unpack .../03-libmbedx509-1_2.28.3-1_amd64.deb ...
- Unpacking libmbedx509-1:amd64 (2.28.3-1) ...
- Selecting previously unselected package libmbedtls14:amd64.
- Preparing to unpack .../04-libmbedtls14_2.28.3-1_amd64.deb ...
- Unpacking libmbedtls14:amd64 (2.28.3-1) ...
- Selecting previously unselected package libgit2-1.5:amd64.
- Preparing to unpack .../05-libgit2-1.5_1.5.1+ds-1+deb12u1_amd64.deb ...
- Unpacking libgit2-1.5:amd64 (1.5.1+ds-1+deb12u1) ...
- Selecting previously unselected package libicu72:amd64.
- Preparing to unpack .../06-libicu72_72.1-3_amd64.deb ...
- Unpacking libicu72:amd64 (72.1-3) ...
- Selecting previously unselected package libxml2:amd64.
- Preparing to unpack .../07-libxml2_2.9.14+dfsg-1.3~deb12u1_amd64.deb ...
- Unpacking libxml2:amd64 (2.9.14+dfsg-1.3~deb12u1) ...
- Selecting previously unselected package libz3-4:amd64.
- Preparing to unpack .../08-libz3-4_4.8.12-3.1_amd64.deb ...
- Unpacking libz3-4:amd64 (4.8.12-3.1) ...
- Selecting previously unselected package libllvm14:amd64.
- Preparing to unpack .../09-libllvm14_1%3a14.0.6-12_amd64.deb ...
- Unpacking libllvm14:amd64 (1:14.0.6-12) ...
- Selecting previously unselected package libstd-rust-1.63:amd64.
- Preparing to unpack .../10-libstd-rust-1.63_1.63.0+dfsg1-2_amd64.deb ...
- Unpacking libstd-rust-1.63:amd64 (1.63.0+dfsg1-2) ...
- Selecting previously unselected package libstd-rust-dev:amd64.
- Preparing to unpack .../11-libstd-rust-dev_1.63.0+dfsg1-2_amd64.deb ...
- Unpacking libstd-rust-dev:amd64 (1.63.0+dfsg1-2) ...
- Selecting previously unselected package rustc.
- Preparing to unpack .../12-rustc_1.63.0+dfsg1-2_amd64.deb ...
- Unpacking rustc (1.63.0+dfsg1-2) ...
- Selecting previously unselected package cargo.
- Preparing to unpack .../13-cargo_0.66.0+ds1-1_amd64.deb ...
- Unpacking cargo (0.66.0+ds1-1) ...
- Selecting previously unselected package icu-devtools.
- Preparing to unpack .../14-icu-devtools_72.1-3_amd64.deb ...
- Unpacking icu-devtools (72.1-3) ...
- Selecting previously unselected package libclang-cpp14.
- Preparing to unpack .../15-libclang-cpp14_1%3a14.0.6-12_amd64.deb ...
- Unpacking libclang-cpp14 (1:14.0.6-12) ...
- Selecting previously unselected package libnspr4:amd64.
- Preparing to unpack .../16-libnspr4_2%3a4.35-1_amd64.deb ...
- Unpacking libnspr4:amd64 (2:4.35-1) ...
- Selecting previously unselected package libnss3:amd64.
- Preparing to unpack .../17-libnss3_2%3a3.87.1-1_amd64.deb ...
- Unpacking libnss3:amd64 (2:3.87.1-1) ...
- Selecting previously unselected package nss-plugin-pem:amd64.
- Preparing to unpack .../18-nss-plugin-pem_1.0.8+1-1_amd64.deb ...
- Unpacking nss-plugin-pem:amd64 (1.0.8+1-1) ...
- Selecting previously unselected package libcurl3-nss:amd64.
- Preparing to unpack .../19-libcurl3-nss_7.88.1-10+deb12u7_amd64.deb ...
- Unpacking libcurl3-nss:amd64 (7.88.1-10+deb12u7) ...
- Selecting previously unselected package libffi-dev:amd64.
- Preparing to unpack .../20-libffi-dev_3.4.4-1_amd64.deb ...
- Unpacking libffi-dev:amd64 (3.4.4-1) ...
- Selecting previously unselected package libicu-dev:amd64.
- Preparing to unpack .../21-libicu-dev_72.1-3_amd64.deb ...
- Unpacking libicu-dev:amd64 (72.1-3) ...
- Selecting previously unselected package libncurses6:amd64.
- Preparing to unpack .../22-libncurses6_6.4-4_amd64.deb ...
- Unpacking libncurses6:amd64 (6.4-4) ...
- Selecting previously unselected package libncurses-dev:amd64.
- Preparing to unpack .../23-libncurses-dev_6.4-4_amd64.deb ...
- Unpacking libncurses-dev:amd64 (6.4-4) ...
- Selecting previously unselected package libpfm4:amd64.
- Preparing to unpack .../24-libpfm4_4.13.0-1_amd64.deb ...
- Unpacking libpfm4:amd64 (4.13.0-1) ...
- Selecting previously unselected package libtinfo-dev:amd64.
- Preparing to unpack .../25-libtinfo-dev_6.4-4_amd64.deb ...
- Unpacking libtinfo-dev:amd64 (6.4-4) ...
- Selecting previously unselected package libxml2-dev:amd64.
- Preparing to unpack .../26-libxml2-dev_2.9.14+dfsg-1.3~deb12u1_amd64.deb ...
- Unpacking libxml2-dev:amd64 (2.9.14+dfsg-1.3~deb12u1) ...
- Selecting previously unselected package libyaml-0-2:amd64.
- Preparing to unpack .../27-libyaml-0-2_0.2.5-1_amd64.deb ...
- Unpacking libyaml-0-2:amd64 (0.2.5-1) ...
- Selecting previously unselected package libz3-dev:amd64.
- Preparing to unpack .../28-libz3-dev_4.8.12-3.1_amd64.deb ...
- Unpacking libz3-dev:amd64 (4.8.12-3.1) ...
- Selecting previously unselected package llvm-14-runtime.
- Preparing to unpack .../29-llvm-14-runtime_1%3a14.0.6-12_amd64.deb ...
- Unpacking llvm-14-runtime (1:14.0.6-12) ...
- Selecting previously unselected package llvm-14-linker-tools.
- Preparing to unpack .../30-llvm-14-linker-tools_1%3a14.0.6-12_amd64.deb ...
- Unpacking llvm-14-linker-tools (1:14.0.6-12) ...
- Selecting previously unselected package llvm-14.
- Preparing to unpack .../31-llvm-14_1%3a14.0.6-12_amd64.deb ...
- Unpacking llvm-14 (1:14.0.6-12) ...
- Selecting previously unselected package python3-pkg-resources.
- Preparing to unpack .../32-python3-pkg-resources_66.1.1-1_all.deb ...
- Unpacking python3-pkg-resources (66.1.1-1) ...
- Selecting previously unselected package python3-pygments.
- Preparing to unpack .../33-python3-pygments_2.14.0+dfsg-1_all.deb ...
- Unpacking python3-pygments (2.14.0+dfsg-1) ...
- Selecting previously unselected package python3-yaml.
- Preparing to unpack .../34-python3-yaml_6.0-3+b2_amd64.deb ...
- Unpacking python3-yaml (6.0-3+b2) ...
- Selecting previously unselected package llvm-14-tools.
- Preparing to unpack .../35-llvm-14-tools_1%3a14.0.6-12_amd64.deb ...
- Unpacking llvm-14-tools (1:14.0.6-12) ...
- Selecting previously unselected package llvm-14-dev.
- Preparing to unpack .../36-llvm-14-dev_1%3a14.0.6-12_amd64.deb ...
- Unpacking llvm-14-dev (1:14.0.6-12) ...
- Setting up media-types (10.0.0) ...
- Setting up libpipeline1:amd64 (1.5.7-1) ...
- Setting up libicu72:amd64 (72.1-3) ...
- Setting up libyaml-0-2:amd64 (0.2.5-1) ...
- Setting up libpython3.11-stdlib:amd64 (3.11.2-6+deb12u3) ...
- Setting up libffi-dev:amd64 (3.4.4-1) ...
- Setting up libz3-4:amd64 (4.8.12-3.1) ...
- Setting up libpfm4:amd64 (4.13.0-1) ...
- Setting up libmbedcrypto7:amd64 (2.28.3-1) ...
- Setting up libnspr4:amd64 (2:4.35-1) ...
- Setting up libncurses6:amd64 (6.4-4) ...
- Setting up binfmt-support (2.2.2-2) ...
- invoke-rc.d: could not determine current runlevel
- invoke-rc.d: policy-rc.d denied execution of start.
- Setting up icu-devtools (72.1-3) ...
- Setting up libicu-dev:amd64 (72.1-3) ...
- Setting up libxml2:amd64 (2.9.14+dfsg-1.3~deb12u1) ...
- Setting up libhttp-parser2.9:amd64 (2.9.4-5) ...
- Setting up libpython3-stdlib:amd64 (3.11.2-1+b1) ...
- Setting up libz3-dev:amd64 (4.8.12-3.1) ...
- Setting up python3.11 (3.11.2-6+deb12u3) ...
- Setting up libncurses-dev:amd64 (6.4-4) ...
- Setting up libmbedx509-1:amd64 (2.28.3-1) ...
- Setting up libmbedtls14:amd64 (2.28.3-1) ...
- Setting up python3 (3.11.2-1+b1) ...
- running python rtupdate hooks for python3.11...
- running python post-rtupdate hooks for python3.11...
- Setting up libnss3:amd64 (2:3.87.1-1) ...
- Setting up libxml2-dev:amd64 (2.9.14+dfsg-1.3~deb12u1) ...
- Setting up libllvm14:amd64 (1:14.0.6-12) ...
- Setting up llvm-14-linker-tools (1:14.0.6-12) ...
- Setting up libgit2-1.5:amd64 (1.5.1+ds-1+deb12u1) ...
- Setting up python3-pkg-resources (66.1.1-1) ...
- Setting up libtinfo-dev:amd64 (6.4-4) ...
- Setting up libstd-rust-1.63:amd64 (1.63.0+dfsg1-2) ...
- Setting up nss-plugin-pem:amd64 (1.0.8+1-1) ...
- Setting up python3-yaml (6.0-3+b2) ...
- Setting up libstd-rust-dev:amd64 (1.63.0+dfsg1-2) ...
- Setting up python3-pygments (2.14.0+dfsg-1) ...
- Setting up llvm-14-runtime (1:14.0.6-12) ...
- Setting up libclang-cpp14 (1:14.0.6-12) ...
- Setting up rustc (1.63.0+dfsg1-2) ...
- Setting up libcurl3-nss:amd64 (7.88.1-10+deb12u7) ...
- Setting up llvm-14 (1:14.0.6-12) ...
- Setting up llvm-14-tools (1:14.0.6-12) ...
- Setting up cargo (0.66.0+ds1-1) ...
- Setting up llvm-14-dev (1:14.0.6-12) ...
- Processing triggers for libc-bin (2.36-9+deb12u8) ...

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved conf-rust-2021.1  (cached)
Processing  2/27:
Processing  3/27:
Processing  4/27:
Processing  5/27: [conf-rust-2021: cargo]
-> retrieved cppo.1.7.0  (cached)
Processing  6/27: [conf-rust-2021: cargo]
Processing  7/27: [conf-rust-2021: cargo] [cppo: dune build]
-> retrieved errpy.0.0.10  (cached)
Processing  8/27: [conf-rust-2021: cargo] [cppo: dune build]
-> retrieved ocaml-compiler-libs.v0.12.4  (cached)
Processing  9/27: [conf-rust-2021: cargo] [cppo: dune build]
Processing 10/27: [conf-rust-2021: cargo] [cppo: dune build] [ocaml-compiler-libs: dune build]
- cargo 1.65.0
Processing 10/27: [conf-rust-2021: rustc 2021] [cppo: dune build] [ocaml-compiler-libs: dune build]
-> retrieved ppx_derivers.1.2.1  (cached)
Processing 11/27: [conf-rust-2021: rustc 2021] [cppo: dune build] [ocaml-compiler-libs: dune build]
Processing 12/27: [conf-rust-2021: rustc 2021] [cppo: dune build] [ocaml-compiler-libs: dune build] [ppx_derivers: dune build]
-> retrieved ppx_deriving.6.0.2  (cached)
Processing 13/27: [conf-rust-2021: rustc 2021] [cppo: dune build] [ocaml-compiler-libs: dune build] [ppx_derivers: dune build]
-> retrieved sexplib0.v0.17.0  (cached)
Processing 14/27: [conf-rust-2021: rustc 2021] [cppo: dune build] [ocaml-compiler-libs: dune build] [ppx_derivers: dune build] [sexplib0: dune build]
-> retrieved stdlib-shims.0.3.0  (cached)
Processing 15/27: [conf-rust-2021: rustc 2021] [cppo: dune build] [ocaml-compiler-libs: dune build] [ppx_derivers: dune build] [sexplib0: dune build] [stdlib-shims: dune build]
-> retrieved ppxlib.0.33.0  (cached)
-> compiled  ppx_derivers.1.2.1
Processing 15/27: [conf-rust-2021: rustc 2021] [cppo: dune build] [ocaml-compiler-libs: dune build] [sexplib0: dune build] [stdlib-shims: dune build]
-> installed ppx_derivers.1.2.1
Processing 16/27: [conf-rust-2021: rustc 2021] [cppo: dune build] [ocaml-compiler-libs: dune build] [sexplib0: dune build] [stdlib-shims: dune build]
-> compiled  conf-rust-2021.1
Processing 16/27: [cppo: dune build] [ocaml-compiler-libs: dune build] [sexplib0: dune build] [stdlib-shims: dune build]
-> installed conf-rust-2021.1
Processing 17/27: [cppo: dune build] [ocaml-compiler-libs: dune build] [sexplib0: dune build] [stdlib-shims: dune build]
-> compiled  stdlib-shims.0.3.0
Processing 17/27: [cppo: dune build] [ocaml-compiler-libs: dune build] [sexplib0: dune build]
-> installed stdlib-shims.0.3.0
Processing 18/27: [cppo: dune build] [ocaml-compiler-libs: dune build] [sexplib0: dune build]
-> compiled  cppo.1.7.0
Processing 18/27: [ocaml-compiler-libs: dune build] [sexplib0: dune build]
-> installed cppo.1.7.0
Processing 19/27: [ocaml-compiler-libs: dune build] [sexplib0: dune build]
-> compiled  sexplib0.v0.17.0
Processing 19/27: [ocaml-compiler-libs: dune build]
-> installed sexplib0.v0.17.0
Processing 20/27: [ocaml-compiler-libs: dune build]
+ /home/opam/.opam/5.1/bin/dune "build" "-p" "ocaml-compiler-libs" "-j" "39" "@install" (CWD=/home/opam/.opam/5.1/.opam-switch/build/ocaml-compiler-libs.v0.12.4)
-> compiled  ocaml-compiler-libs.v0.12.4
-> installed ocaml-compiler-libs.v0.12.4
Processing 22/27: [ppxlib: dune build]
+ /home/opam/.opam/5.1/bin/dune "build" "-p" "ppxlib" "-j" "39" "@install" (CWD=/home/opam/.opam/5.1/.opam-switch/build/ppxlib.0.33.0)
-> compiled  ppxlib.0.33.0
-> installed ppxlib.0.33.0
Processing 24/27: [ppx_deriving: dune build]
+ /home/opam/.opam/5.1/bin/dune "build" "-p" "ppx_deriving" "-j" "39" (CWD=/home/opam/.opam/5.1/.opam-switch/build/ppx_deriving.6.0.2)
-> compiled  ppx_deriving.6.0.2
-> installed ppx_deriving.6.0.2
Processing 26/27: [errpy: dune build]
+ /home/opam/.opam/5.1/bin/dune "build" "-p" "errpy" "-j" "39" "@install" (CWD=/home/opam/.opam/5.1/.opam-switch/build/errpy.0.0.10)
- File "dune", lines 13-20, characters 0-179:
- 13 | (rule
- 14 |  (targets libffi_ocaml.a)
- 15 |  (mode fallback)
- 16 |  (locks /cargo)
- 17 |  (action
- 18 |   (progn
- 19 |    (run cargo build --release)
- 20 |    (run cp ../../target/release/libffi_ocaml.a libffi_ocaml.a))))
- (cd _build/default && /usr/bin/cargo build --release)
- error: package `toml_datetime v0.6.5` cannot be built because it requires rustc 1.67 or newer, while the currently active rustc version is 1.63.0
- Either upgrade to rustc 1.67 or newer, or use
- cargo update -p toml_datetime@0.6.5 --precise ver
- where `ver` is the latest version of `toml_datetime` supporting rustc 1.63.0
[ERROR] The compilation of errpy.0.0.10 failed at "dune build -p errpy -j 39 @install".

#=== ERROR while compiling errpy.0.0.10 =======================================#
# context              2.1.6 | linux/x86_64 | ocaml-base-compiler.5.1.1 | file:///src
# path                 ~/.opam/5.1/.opam-switch/build/errpy.0.0.10
# command              ~/.opam/5.1/bin/dune build -p errpy -j 39 @install
# exit-code            1
# env-file             ~/.opam/log/errpy-115-a2a034.env
# output-file          ~/.opam/log/errpy-115-a2a034.out
### output ###
# File "dune", lines 13-20, characters 0-179:
# 13 | (rule
# 14 |  (targets libffi_ocaml.a)
# 15 |  (mode fallback)
# 16 |  (locks /cargo)
# 17 |  (action
# 18 |   (progn
# 19 |    (run cargo build --release)
# 20 |    (run cp ../../target/release/libffi_ocaml.a libffi_ocaml.a))))
# (cd _build/default && /usr/bin/cargo build --release)
# error: package `toml_datetime v0.6.5` cannot be built because it requires rustc 1.67 or newer, while the currently active rustc version is 1.63.0
# Either upgrade to rustc 1.67 or newer, or use
# cargo update -p toml_datetime@0.6.5 --precise ver
# where `ver` is the latest version of `toml_datetime` supporting rustc 1.63.0



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build errpy 0.0.10
+- 
+- The following changes have been performed
| - install conf-rust-2021      1
| - install cppo                1.7.0
| - install ocaml-compiler-libs v0.12.4
| - install ppx_derivers        1.2.1
| - install ppx_deriving        6.0.2
| - install ppxlib              0.33.0
| - install sexplib0            v0.17.0
| - install stdlib-shims        0.3.0
+- 
# Run eval $(opam env) to update the current shell environment

The former state can be restored with:
    /usr/bin/opam switch import "/home/opam/.opam/5.1/.opam-switch/backup/state-20240912110317.export"
'opam --cli=2.1 install errpy.0.0.10 stdlib-shims.0.3.0 sexplib0.v0.17.0 ppxlib.0.33.0 ppx_deriving.6.0.2 ppx_derivers.1.2.1 ocamlfind.1.9.6 ocaml-compiler-libs.v0.12.4 dune.3.16.0 cppo.1.7.0 conf-rust-2021.1 --verbose --yes --confirm-level=unsafe-yes' failed.