[INFO] cloning repository https://github.com/cedric-h/train
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cedric-h/train" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcedric-h%2Ftrain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcedric-h%2Ftrain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 496cacfbd166e73c64d6afb10090f471c508b5ec
[INFO] testing cedric-h/train against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcedric-h%2Ftrain" "/workspace/builds/worker-85/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-85/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cedric-h/train on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cedric-h/train
[INFO] finished tweaking git repo https://github.com/cedric-h/train
[INFO] tweaked toml for git repo https://github.com/cedric-h/train written to /workspace/builds/worker-85/source/Cargo.toml
[INFO] crate git repo https://github.com/cedric-h/train already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sapp-wasm v0.1.19
[INFO] [stderr]   Downloaded sapp-windows v0.2.13
[INFO] [stderr]   Downloaded sapp-dummy v0.1.4
[INFO] [stderr]   Downloaded sapp-darwin v0.1.3
[INFO] [stderr]   Downloaded glam v0.11.2
[INFO] [stderr]   Downloaded sapp-android v0.1.4
[INFO] [stderr]   Downloaded sapp-ios v0.1.1
[INFO] [stderr]   Downloaded sapp-linux v0.1.10
[INFO] [stderr]   Downloaded miniquad v0.3.0-alpha.24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5610f56c9f7572258404ce09970140c501b61bc4fe78ef7f71a8658301f1e1f
[INFO] running `Command { std: "docker" "start" "-a" "a5610f56c9f7572258404ce09970140c501b61bc4fe78ef7f71a8658301f1e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5610f56c9f7572258404ce09970140c501b61bc4fe78ef7f71a8658301f1e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5610f56c9f7572258404ce09970140c501b61bc4fe78ef7f71a8658301f1e1f", kill_on_drop: false }`
[INFO] [stdout] a5610f56c9f7572258404ce09970140c501b61bc4fe78ef7f71a8658301f1e1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b299e49b5a1105565b74fd117dd8ea1e607ffd3804d61032999ee64cfb31abf7
[INFO] running `Command { std: "docker" "start" "-a" "b299e49b5a1105565b74fd117dd8ea1e607ffd3804d61032999ee64cfb31abf7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling sapp-linux v0.1.10
[INFO] [stderr]    Compiling glam v0.11.2
[INFO] [stderr]    Compiling miniquad v0.3.0-alpha.24
[INFO] [stderr]    Compiling train v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(array_map)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `train` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b299e49b5a1105565b74fd117dd8ea1e607ffd3804d61032999ee64cfb31abf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b299e49b5a1105565b74fd117dd8ea1e607ffd3804d61032999ee64cfb31abf7", kill_on_drop: false }`
[INFO] [stdout] b299e49b5a1105565b74fd117dd8ea1e607ffd3804d61032999ee64cfb31abf7