[INFO] cloning repository https://github.com/xeqlol/wasm-gol
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xeqlol/wasm-gol" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeqlol%2Fwasm-gol", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeqlol%2Fwasm-gol'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ba46be41b31d2b1a88de29cbd0af3ae18dcb2fa
[INFO] testing xeqlol/wasm-gol against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeqlol%2Fwasm-gol" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xeqlol/wasm-gol on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xeqlol/wasm-gol
[INFO] finished tweaking git repo https://github.com/xeqlol/wasm-gol
[INFO] tweaked toml for git repo https://github.com/xeqlol/wasm-gol written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate git repo https://github.com/xeqlol/wasm-gol already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4290003f38b67f7fb8649f69832bf98beba4d66ef955ed897992c87255c7f794
[INFO] running `Command { std: "docker" "start" "-a" "4290003f38b67f7fb8649f69832bf98beba4d66ef955ed897992c87255c7f794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4290003f38b67f7fb8649f69832bf98beba4d66ef955ed897992c87255c7f794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4290003f38b67f7fb8649f69832bf98beba4d66ef955ed897992c87255c7f794", kill_on_drop: false }`
[INFO] [stdout] 4290003f38b67f7fb8649f69832bf98beba4d66ef955ed897992c87255c7f794
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5dee16a598fcbd0784dfb36c5ccbd44a0f05b6b233b4f74ca753b12bb1e105f
[INFO] running `Command { std: "docker" "start" "-a" "e5dee16a598fcbd0784dfb36c5ccbd44a0f05b6b233b4f74ca753b12bb1e105f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.55
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.10
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]    Compiling serde_json v1.0.17
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.10
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.10
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wasm-bindgen-macro-0.2.10/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasm-bindgen-macro`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e5dee16a598fcbd0784dfb36c5ccbd44a0f05b6b233b4f74ca753b12bb1e105f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5dee16a598fcbd0784dfb36c5ccbd44a0f05b6b233b4f74ca753b12bb1e105f", kill_on_drop: false }`
[INFO] [stdout] e5dee16a598fcbd0784dfb36c5ccbd44a0f05b6b233b4f74ca753b12bb1e105f
