[INFO] fetching crate doc-comment 0.3.3...
[INFO] testing doc-comment-0.3.3 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate doc-comment 0.3.3 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate doc-comment 0.3.3 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate doc-comment 0.3.3
[INFO] finished tweaking crates.io crate doc-comment 0.3.3
[INFO] tweaked toml for crates.io crate doc-comment 0.3.3 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27b85c4974267dfd28055951615e6b6d3f0db8bcb4a70814215fe0b0ec75ca7a
[INFO] running `Command { std: "docker" "start" "-a" "27b85c4974267dfd28055951615e6b6d3f0db8bcb4a70814215fe0b0ec75ca7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27b85c4974267dfd28055951615e6b6d3f0db8bcb4a70814215fe0b0ec75ca7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27b85c4974267dfd28055951615e6b6d3f0db8bcb4a70814215fe0b0ec75ca7a", kill_on_drop: false }`
[INFO] [stdout] 27b85c4974267dfd28055951615e6b6d3f0db8bcb4a70814215fe0b0ec75ca7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66e3fb049f1d673668606452aa02a04d4d7afb239cec1d2bed5afd2f07e24147
[INFO] running `Command { std: "docker" "start" "-a" "66e3fb049f1d673668606452aa02a04d4d7afb239cec1d2bed5afd2f07e24147", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling doc-comment v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `Command { std: "docker" "inspect" "66e3fb049f1d673668606452aa02a04d4d7afb239cec1d2bed5afd2f07e24147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66e3fb049f1d673668606452aa02a04d4d7afb239cec1d2bed5afd2f07e24147", kill_on_drop: false }`
[INFO] [stdout] 66e3fb049f1d673668606452aa02a04d4d7afb239cec1d2bed5afd2f07e24147
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df6f4ae0cc438e5a08cdf671db264fe2a0abb4a20510384676085b6755ce903e
[INFO] running `Command { std: "docker" "start" "-a" "df6f4ae0cc438e5a08cdf671db264fe2a0abb4a20510384676085b6755ce903e", kill_on_drop: false }`
[INFO] [stderr]    Compiling doc-comment v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "df6f4ae0cc438e5a08cdf671db264fe2a0abb4a20510384676085b6755ce903e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df6f4ae0cc438e5a08cdf671db264fe2a0abb4a20510384676085b6755ce903e", kill_on_drop: false }`
[INFO] [stdout] df6f4ae0cc438e5a08cdf671db264fe2a0abb4a20510384676085b6755ce903e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b24b1697fc2a0300acba8ff346a5b7911b095df07a85759b57910586f7d9167a
[INFO] running `Command { std: "docker" "start" "-a" "b24b1697fc2a0300acba8ff346a5b7911b095df07a85759b57910586f7d9167a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/doc_comment-78f7f209afcfac4e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests doc_comment
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - (line 44) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 54) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 32) ... ok
[INFO] [stdout] test src/lib.rs - (line 111) ... ok
[INFO] [stdout] test src/lib.rs - (line 70) ... ok
[INFO] [stdout] test src/lib.rs - doctest (line 181) ... ok
[INFO] [stdout] test src/lib.rs - doc_comment (line 154) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b24b1697fc2a0300acba8ff346a5b7911b095df07a85759b57910586f7d9167a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b24b1697fc2a0300acba8ff346a5b7911b095df07a85759b57910586f7d9167a", kill_on_drop: false }`
[INFO] [stdout] b24b1697fc2a0300acba8ff346a5b7911b095df07a85759b57910586f7d9167a