[INFO] cloning repository https://github.com/APLanguage/aplang-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/APLanguage/aplang-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAPLanguage%2Faplang-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAPLanguage%2Faplang-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 948f5a35089165fffdce26c04aa3e0bf4a7d2a3d
[INFO] testing APLanguage/aplang-rs against 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAPLanguage%2Faplang-rs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/APLanguage/aplang-rs on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/APLanguage/aplang-rs
[INFO] finished tweaking git repo https://github.com/APLanguage/aplang-rs
[INFO] tweaked toml for git repo https://github.com/APLanguage/aplang-rs written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/APLanguage/aplang-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/APLanguage/ariadne.git`
[INFO] [stderr]     Updating git repository `https://github.com/APLanguage/bigdecimal-rs.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/APLanguage/walkdir.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lasso v0.7.2
[INFO] [stderr]   Downloaded serde_derive v1.0.186
[INFO] [stderr]   Downloaded serde v1.0.186
[INFO] [stderr]   Downloaded chumsky v1.0.0-alpha.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d61116c3b45a99ef97e7340188e9b80f759092b04696753b86affc1c68cc4c4
[INFO] running `Command { std: "docker" "start" "-a" "1d61116c3b45a99ef97e7340188e9b80f759092b04696753b86affc1c68cc4c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d61116c3b45a99ef97e7340188e9b80f759092b04696753b86affc1c68cc4c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d61116c3b45a99ef97e7340188e9b80f759092b04696753b86affc1c68cc4c4", kill_on_drop: false }`
[INFO] [stdout] 1d61116c3b45a99ef97e7340188e9b80f759092b04696753b86affc1c68cc4c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f5c2e1f1dc4b103fdf33046a8c00ec729ed590db774c76da36a3c6121de882a
[INFO] running `Command { std: "docker" "start" "-a" "5f5c2e1f1dc4b103fdf33046a8c00ec729ed590db774c76da36a3c6121de882a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling serde v1.0.186
[INFO] [stderr]    Compiling allocator-api2 v0.2.16
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling hashbrown v0.14.0
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling indexmap v2.0.0
[INFO] [stderr]    Compiling bigdecimal v0.4.2+dev (https://github.com/APLanguage/bigdecimal-rs.git?rev=864927641721a39299e460deebdc85d01ea0930b#86492764)
[INFO] [stderr]    Compiling aho-corasick v1.0.4
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling thiserror v1.0.47
[INFO] [stderr]    Compiling winnow v0.5.15
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]    Compiling stacker v0.1.15
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling chumsky v1.0.0-alpha.6
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling logos-codegen v0.13.0
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling walkdir v2.3.3 (https://github.com/APLanguage/walkdir.git#d0ec81be)
[INFO] [stderr]    Compiling ariadne v0.3.0 (https://github.com/APLanguage/ariadne.git?rev=bdc392368fb45e71aff0feca58d0bf66f56698ae#bdc39236)
[INFO] [stderr]    Compiling lasso v0.7.2
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling indextree v4.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.186
[INFO] [stderr]    Compiling logos-derive v0.13.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.47
[INFO] [stderr]    Compiling strum_macros v0.25.2
[INFO] [stderr]    Compiling strum v0.25.0
[INFO] [stderr]    Compiling traversal v0.1.2
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling logos v0.13.0
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling serde_spanned v0.6.4
[INFO] [stderr]    Compiling toml_edit v0.21.0
[INFO] [stderr]    Compiling toml v0.8.8
[INFO] [stderr]    Compiling aplang v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(iter_collect_into)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(iter_collect_into)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aplang` (bin "aplang") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "5f5c2e1f1dc4b103fdf33046a8c00ec729ed590db774c76da36a3c6121de882a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f5c2e1f1dc4b103fdf33046a8c00ec729ed590db774c76da36a3c6121de882a", kill_on_drop: false }`
[INFO] [stdout] 5f5c2e1f1dc4b103fdf33046a8c00ec729ed590db774c76da36a3c6121de882a
[INFO] testing APLanguage/aplang-rs against beta-2024-02-10 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAPLanguage%2Faplang-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/APLanguage/aplang-rs on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/APLanguage/aplang-rs
[INFO] finished tweaking git repo https://github.com/APLanguage/aplang-rs
[INFO] tweaked toml for git repo https://github.com/APLanguage/aplang-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/APLanguage/aplang-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08b7e925bcb3f57d465f0435d962a414079e65846ca96ee805ed4f3a9dc897fa
[INFO] running `Command { std: "docker" "start" "-a" "08b7e925bcb3f57d465f0435d962a414079e65846ca96ee805ed4f3a9dc897fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08b7e925bcb3f57d465f0435d962a414079e65846ca96ee805ed4f3a9dc897fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08b7e925bcb3f57d465f0435d962a414079e65846ca96ee805ed4f3a9dc897fa", kill_on_drop: false }`
[INFO] [stdout] 08b7e925bcb3f57d465f0435d962a414079e65846ca96ee805ed4f3a9dc897fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bc36a1b85c7bf88b414b679b23cd8766ff4dbaac1e6cce03016aa10d6e6affd
[INFO] running `Command { std: "docker" "start" "-a" "2bc36a1b85c7bf88b414b679b23cd8766ff4dbaac1e6cce03016aa10d6e6affd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling serde v1.0.186
[INFO] [stderr]    Compiling allocator-api2 v0.2.16
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling hashbrown v0.14.0
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling aho-corasick v1.0.4
[INFO] [stderr]    Compiling indexmap v2.0.0
[INFO] [stderr]    Compiling bigdecimal v0.4.2+dev (https://github.com/APLanguage/bigdecimal-rs.git?rev=864927641721a39299e460deebdc85d01ea0930b#86492764)
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling chumsky v1.0.0-alpha.6
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling winnow v0.5.15
[INFO] [stderr]    Compiling thiserror v1.0.47
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]    Compiling stacker v0.1.15
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling logos-codegen v0.13.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling walkdir v2.3.3 (https://github.com/APLanguage/walkdir.git#d0ec81be)
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling ariadne v0.3.0 (https://github.com/APLanguage/ariadne.git?rev=bdc392368fb45e71aff0feca58d0bf66f56698ae#bdc39236)
[INFO] [stderr]    Compiling lasso v0.7.2
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling indextree v4.6.0
[INFO] [stderr]    Compiling traversal v0.1.2
[INFO] [stderr]    Compiling strum v0.25.0
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.186
[INFO] [stderr]    Compiling logos-derive v0.13.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.47
[INFO] [stderr]    Compiling strum_macros v0.25.2
[INFO] [stderr]    Compiling logos v0.13.0
[INFO] [stderr]    Compiling serde_spanned v0.6.4
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling toml_edit v0.21.0
[INFO] [stderr]    Compiling toml v0.8.8
[INFO] [stderr]    Compiling aplang v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(iter_collect_into)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(iter_collect_into)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aplang` (bin "aplang") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "2bc36a1b85c7bf88b414b679b23cd8766ff4dbaac1e6cce03016aa10d6e6affd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bc36a1b85c7bf88b414b679b23cd8766ff4dbaac1e6cce03016aa10d6e6affd", kill_on_drop: false }`
[INFO] [stdout] 2bc36a1b85c7bf88b414b679b23cd8766ff4dbaac1e6cce03016aa10d6e6affd
