[INFO] fetching crate comrak 0.12.1...
[INFO] checking comrak-0.12.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate comrak 0.12.1 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate comrak 0.12.1 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 crates.io crate comrak 0.12.1
[INFO] finished tweaking crates.io crate comrak 0.12.1
[INFO] tweaked toml for crates.io crate comrak 0.12.1 written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate crates.io crate comrak 0.12.1 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]  Downloading crates ...
[INFO] [stderr]   Downloaded onig v6.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.128
[INFO] [stderr]   Downloaded line-wrap v0.1.1
[INFO] [stderr]   Downloaded typed-arena v1.7.0
[INFO] [stderr]   Downloaded flate2 v1.0.20
[INFO] [stderr]   Downloaded entities v1.0.1
[INFO] [stderr]   Downloaded twoway v0.2.2
[INFO] [stderr]   Downloaded onig_sys v69.7.0
[INFO] [stderr]   Downloaded bitflags v1.3.1
[INFO] [stderr]   Downloaded plist v1.2.1
[INFO] [stderr]   Downloaded serde v1.0.128
[INFO] [stderr]   Downloaded shell-words v1.0.0
[INFO] [stderr]   Downloaded pulse v0.5.3
[INFO] [stderr]   Downloaded syntect v4.6.0
[INFO] [stderr]   Downloaded unchecked-index v0.2.2
[INFO] [stderr]   Downloaded timebomb v0.1.2
[INFO] [stderr]   Downloaded time v0.3.1
[INFO] [stderr]   Downloaded propfuzz-macro v0.0.1
[INFO] [stderr]   Downloaded propfuzz v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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] 4898f880caab85be81889d254371c4cd5d1ce2d0f98238ac60aeb22e2f01ae29
[INFO] running `Command { std: "docker" "start" "-a" "4898f880caab85be81889d254371c4cd5d1ce2d0f98238ac60aeb22e2f01ae29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4898f880caab85be81889d254371c4cd5d1ce2d0f98238ac60aeb22e2f01ae29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4898f880caab85be81889d254371c4cd5d1ce2d0f98238ac60aeb22e2f01ae29", kill_on_drop: false }`
[INFO] [stdout] 4898f880caab85be81889d254371c4cd5d1ce2d0f98238ac60aeb22e2f01ae29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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] a76e6345dcc9466d89ee60b21c85398aeef2f31a49b95edb21c00ef561b2be54
[INFO] running `Command { std: "docker" "start" "-a" "a76e6345dcc9466d89ee60b21c85398aeef2f31a49b95edb21c00ef561b2be54", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking bitflags v1.3.1
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking unchecked-index v0.2.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking entities v1.0.1
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking atom v0.3.6
[INFO] [stderr]     Checking shell-words v1.0.0
[INFO] [stderr]     Checking time v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]    Compiling onig_sys v69.7.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking twoway v0.2.2
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking pulse v0.5.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking timebomb v0.1.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v0.10.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking plist v1.2.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking onig v6.2.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling propfuzz-macro v0.0.1
[INFO] [stderr]     Checking propfuzz v0.0.1
[INFO] [stderr]     Checking syntect v4.6.0
[INFO] [stderr]     Checking comrak v0.12.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/progit.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `comrak` 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" "a76e6345dcc9466d89ee60b21c85398aeef2f31a49b95edb21c00ef561b2be54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a76e6345dcc9466d89ee60b21c85398aeef2f31a49b95edb21c00ef561b2be54", kill_on_drop: false }`
[INFO] [stdout] a76e6345dcc9466d89ee60b21c85398aeef2f31a49b95edb21c00ef561b2be54
