[INFO] cloning repository https://github.com/noxabellus/lexer-io-perf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/noxabellus/lexer-io-perf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoxabellus%2Flexer-io-perf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoxabellus%2Flexer-io-perf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d639566d8a2c91c4e5b3e4067d634e47ac6cf5d
[INFO] testing noxabellus/lexer-io-perf against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoxabellus%2Flexer-io-perf" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/noxabellus/lexer-io-perf on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/noxabellus/lexer-io-perf
[INFO] finished tweaking git repo https://github.com/noxabellus/lexer-io-perf
[INFO] tweaked toml for git repo https://github.com/noxabellus/lexer-io-perf written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/noxabellus/lexer-io-perf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2794a4ebc87577f98fca9bece0a76d07d1b03e3912fcce4a964f80aaa8274cd
[INFO] running `Command { std: "docker" "start" "-a" "f2794a4ebc87577f98fca9bece0a76d07d1b03e3912fcce4a964f80aaa8274cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2794a4ebc87577f98fca9bece0a76d07d1b03e3912fcce4a964f80aaa8274cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2794a4ebc87577f98fca9bece0a76d07d1b03e3912fcce4a964f80aaa8274cd", kill_on_drop: false }`
[INFO] [stdout] f2794a4ebc87577f98fca9bece0a76d07d1b03e3912fcce4a964f80aaa8274cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93c00ca534bd4aa78abff63c69dc778d4a8594da7755e5f7d14d0c7e172bf611
[INFO] running `Command { std: "docker" "start" "-a" "93c00ca534bd4aa78abff63c69dc778d4a8594da7755e5f7d14d0c7e172bf611", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.84
[INFO] [stderr]    Compiling lexer-io-perf 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:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[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 `lexer-io-perf` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "93c00ca534bd4aa78abff63c69dc778d4a8594da7755e5f7d14d0c7e172bf611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93c00ca534bd4aa78abff63c69dc778d4a8594da7755e5f7d14d0c7e172bf611", kill_on_drop: false }`
[INFO] [stdout] 93c00ca534bd4aa78abff63c69dc778d4a8594da7755e5f7d14d0c7e172bf611