[INFO] cloning repository https://github.com/twe4ked/rustdoc-cli
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/twe4ked/rustdoc-cli" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwe4ked%2Frustdoc-cli", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwe4ked%2Frustdoc-cli'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0145f60ac99d1b79a55ac8519de11196fed6e020
[INFO] checking twe4ked/rustdoc-cli against try#59a256151e578f525a26127f2c3e3a6c7e2982ca for pr-149291-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwe4ked%2Frustdoc-cli" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/twe4ked/rustdoc-cli
[INFO] finished tweaking git repo https://github.com/twe4ked/rustdoc-cli
[INFO] tweaked toml for git repo https://github.com/twe4ked/rustdoc-cli written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/twe4ked/rustdoc-cli on toolchain 59a256151e578f525a26127f2c3e3a6c7e2982ca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/twe4ked/rustdoc-cli already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking twe4ked/rustdoc-cli against try#59a256151e578f525a26127f2c3e3a6c7e2982ca for pr-149291-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwe4ked%2Frustdoc-cli" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/twe4ked/rustdoc-cli
[INFO] finished tweaking git repo https://github.com/twe4ked/rustdoc-cli
[INFO] tweaked toml for git repo https://github.com/twe4ked/rustdoc-cli written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/twe4ked/rustdoc-cli on toolchain 59a256151e578f525a26127f2c3e3a6c7e2982ca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/twe4ked/rustdoc-cli already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v0.4.5
[INFO] [stderr]   Downloaded plist v1.0.0
[INFO] [stderr]   Downloaded line-wrap v0.1.1
[INFO] [stderr]   Downloaded yaml-rust v0.4.3
[INFO] [stderr]   Downloaded adler32 v1.0.4
[INFO] [stderr]   Downloaded safemem v0.3.3
[INFO] [stderr]   Downloaded linked-hash-map v0.5.3
[INFO] [stderr]   Downloaded unicode-width v0.1.7
[INFO] [stderr]   Downloaded getopts v0.2.21
[INFO] [stderr]   Downloaded bincode v1.2.1
[INFO] [stderr]   Downloaded unicase v2.6.0
[INFO] [stderr]   Downloaded onig v6.0.0
[INFO] [stderr]   Downloaded base64 v0.12.1
[INFO] [stderr]   Downloaded miniz_oxide v0.3.6
[INFO] [stderr]   Downloaded flate2 v1.0.14
[INFO] [stderr]   Downloaded indexmap v1.3.2
[INFO] [stderr]   Downloaded chrono v0.4.11
[INFO] [stderr]   Downloaded serde_derive v1.0.111
[INFO] [stderr]   Downloaded pulldown-cmark v0.7.1
[INFO] [stderr]   Downloaded serde_json v1.0.53
[INFO] [stderr]   Downloaded crc32fast v1.2.0
[INFO] [stderr]   Downloaded num-integer v0.1.42
[INFO] [stderr]   Downloaded onig_sys v69.5.0
[INFO] [stderr]   Downloaded syntect v4.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4a513635a5e1284b8f78f4492808cdc1e93e7eb2ebc6c8f118bbb7b1324affc
[INFO] running `Command { std: "docker" "start" "-a" "c4a513635a5e1284b8f78f4492808cdc1e93e7eb2ebc6c8f118bbb7b1324affc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4a513635a5e1284b8f78f4492808cdc1e93e7eb2ebc6c8f118bbb7b1324affc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4a513635a5e1284b8f78f4492808cdc1e93e7eb2ebc6c8f118bbb7b1324affc", kill_on_drop: false }`
[INFO] [stdout] c4a513635a5e1284b8f78f4492808cdc1e93e7eb2ebc6c8f118bbb7b1324affc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c37f36ee8abe211c92575f750bd745cf317578095c86f0eb4fef419fbd7fe20d
[INFO] running `Command { std: "docker" "start" "-a" "c37f36ee8abe211c92575f750bd745cf317578095c86f0eb4fef419fbd7fe20d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling onig_sys v69.5.0
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking base64 v0.12.1
[INFO] [stderr]    Compiling pulldown-cmark v0.7.1
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking plist v1.0.0
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]     Checking onig v6.0.0
[INFO] [stderr]     Checking syntect v4.2.0
[INFO] [stderr]     Checking rustdoc-cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `foo` is never used
[INFO] [stdout]    --> src/main.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn foo() {}
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo` is never used
[INFO] [stdout]    --> src/main.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn foo() {}
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.07s
[INFO] running `Command { std: "docker" "inspect" "c37f36ee8abe211c92575f750bd745cf317578095c86f0eb4fef419fbd7fe20d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c37f36ee8abe211c92575f750bd745cf317578095c86f0eb4fef419fbd7fe20d", kill_on_drop: false }`
[INFO] [stdout] c37f36ee8abe211c92575f750bd745cf317578095c86f0eb4fef419fbd7fe20d