[INFO] cloning repository https://github.com/flauntingspade4/graphy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flauntingspade4/graphy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflauntingspade4%2Fgraphy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflauntingspade4%2Fgraphy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b8dc8fb4e85c4e9d517c4d1985adc897514d6f6
[INFO] checking flauntingspade4/graphy against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflauntingspade4%2Fgraphy" "/workspace/builds/worker-43/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-43/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flauntingspade4/graphy 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/flauntingspade4/graphy
[INFO] finished tweaking git repo https://github.com/flauntingspade4/graphy
[INFO] tweaked toml for git repo https://github.com/flauntingspade4/graphy written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate git repo https://github.com/flauntingspade4/graphy 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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] ccdd7e6d801202da81174c16cef9abcef35b1930f10ef1cc3d15f5e0fd77b0ca
[INFO] running `Command { std: "docker" "start" "-a" "ccdd7e6d801202da81174c16cef9abcef35b1930f10ef1cc3d15f5e0fd77b0ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccdd7e6d801202da81174c16cef9abcef35b1930f10ef1cc3d15f5e0fd77b0ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccdd7e6d801202da81174c16cef9abcef35b1930f10ef1cc3d15f5e0fd77b0ca", kill_on_drop: false }`
[INFO] [stdout] ccdd7e6d801202da81174c16cef9abcef35b1930f10ef1cc3d15f5e0fd77b0ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c5a9636570b31b199c4f443740ee502bd96803403780db4f1b93c7a757ee57b
[INFO] running `Command { std: "docker" "start" "-a" "9c5a9636570b31b199c4f443740ee502bd96803403780db4f1b93c7a757ee57b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking graph 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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | / #![feature(
[INFO] [stdout] 3 | |     const_raw_ptr_deref,
[INFO] [stdout] 4 | |     const_mut_refs,
[INFO] [stdout] 5 | |     option_result_unwrap_unchecked,
[INFO] [stdout] 6 | |     allocator_api
[INFO] [stdout] 7 | | )]
[INFO] [stdout]   | |__^
[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 `graph` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9c5a9636570b31b199c4f443740ee502bd96803403780db4f1b93c7a757ee57b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c5a9636570b31b199c4f443740ee502bd96803403780db4f1b93c7a757ee57b", kill_on_drop: false }`
[INFO] [stdout] 9c5a9636570b31b199c4f443740ee502bd96803403780db4f1b93c7a757ee57b
