[INFO] cloning repository https://github.com/rowan-sl/copper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rowan-sl/copper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frowan-sl%2Fcopper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frowan-sl%2Fcopper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72664e68ab185a90b3dab092c9079756d9bcf88f
[INFO] checking rowan-sl/copper against master#c5af0610196bc39c44e54f1e08bd9149bdc66929 for pr-118120
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frowan-sl%2Fcopper" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rowan-sl/copper on toolchain c5af0610196bc39c44e54f1e08bd9149bdc66929
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c5af0610196bc39c44e54f1e08bd9149bdc66929" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rowan-sl/copper
[INFO] finished tweaking git repo https://github.com/rowan-sl/copper
[INFO] tweaked toml for git repo https://github.com/rowan-sl/copper written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rowan-sl/copper 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" "+c5af0610196bc39c44e54f1e08bd9149bdc66929" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking rowan-sl/copper against try#a832c07a2bcc7587230eb0706f83d1d602ae5c2b for pr-118120
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frowan-sl%2Fcopper" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rowan-sl/copper on toolchain a832c07a2bcc7587230eb0706f83d1d602ae5c2b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a832c07a2bcc7587230eb0706f83d1d602ae5c2b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rowan-sl/copper
[INFO] finished tweaking git repo https://github.com/rowan-sl/copper
[INFO] tweaked toml for git repo https://github.com/rowan-sl/copper written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rowan-sl/copper 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" "+a832c07a2bcc7587230eb0706f83d1d602ae5c2b" "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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+a832c07a2bcc7587230eb0706f83d1d602ae5c2b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee5e62bd403ad2ff6b39163a358187871884099061a84c4f0e2bcff7bc81ddc7
[INFO] running `Command { std: "docker" "start" "-a" "ee5e62bd403ad2ff6b39163a358187871884099061a84c4f0e2bcff7bc81ddc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee5e62bd403ad2ff6b39163a358187871884099061a84c4f0e2bcff7bc81ddc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee5e62bd403ad2ff6b39163a358187871884099061a84c4f0e2bcff7bc81ddc7", kill_on_drop: false }`
[INFO] [stdout] ee5e62bd403ad2ff6b39163a358187871884099061a84c4f0e2bcff7bc81ddc7
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+a832c07a2bcc7587230eb0706f83d1d602ae5c2b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ecaa6a9101e14e412b28b00120531f0af1d36a995f17809850762e8c27fb8e0a
[INFO] running `Command { std: "docker" "start" "-a" "ecaa6a9101e14e412b28b00120531f0af1d36a995f17809850762e8c27fb8e0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking clap_lex v0.2.2
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking uuid v1.1.2
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling clap_derive v3.2.4
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking clap v3.2.4
[INFO] [stderr]     Checking cuc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parse2/mod.rs:243:17
[INFO] [stdout]     |
[INFO] [stdout] 243 |                 /// None is the same as typing `return;`, Some is `return <some thing here>`
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 244 |                     value: Some(value),
[INFO] [stdout]     |                     ------------------ rustdoc does not generate documentation for pattern fields
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parse2/mod.rs:243:17
[INFO] [stdout]     |
[INFO] [stdout] 243 |                 /// None is the same as typing `return;`, Some is `return <some thing here>`
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 244 |                     value: Some(value),
[INFO] [stdout]     |                     ------------------ rustdoc does not generate documentation for pattern fields
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.06s
[INFO] running `Command { std: "docker" "inspect" "ecaa6a9101e14e412b28b00120531f0af1d36a995f17809850762e8c27fb8e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecaa6a9101e14e412b28b00120531f0af1d36a995f17809850762e8c27fb8e0a", kill_on_drop: false }`
[INFO] [stdout] ecaa6a9101e14e412b28b00120531f0af1d36a995f17809850762e8c27fb8e0a