[INFO] fetching crate gobuild 0.1.0-alpha.2...
[INFO] checking gobuild-0.1.0-alpha.2 against try#751cdbaf3a893bc71b2c617bb7be22dfea5f0862 for pr-95611
[INFO] extracting crate gobuild 0.1.0-alpha.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate gobuild 0.1.0-alpha.2 on toolchain 751cdbaf3a893bc71b2c617bb7be22dfea5f0862
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gobuild 0.1.0-alpha.2
[INFO] finished tweaking crates.io crate gobuild 0.1.0-alpha.2
[INFO] tweaked toml for crates.io crate gobuild 0.1.0-alpha.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e82ef00159b9d6bc2ef18f4d04bfbb295a605918216c31d447b4c282088caf3
[INFO] running `Command { std: "docker" "start" "-a" "8e82ef00159b9d6bc2ef18f4d04bfbb295a605918216c31d447b4c282088caf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e82ef00159b9d6bc2ef18f4d04bfbb295a605918216c31d447b4c282088caf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e82ef00159b9d6bc2ef18f4d04bfbb295a605918216c31d447b4c282088caf3", kill_on_drop: false }`
[INFO] [stdout] 8e82ef00159b9d6bc2ef18f4d04bfbb295a605918216c31d447b4c282088caf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+751cdbaf3a893bc71b2c617bb7be22dfea5f0862" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2ff5c21a9f1972987f4e7d7713e1bcb37017e1655150ea6ab66a7ae7263ffe2
[INFO] running `Command { std: "docker" "start" "-a" "a2ff5c21a9f1972987f4e7d7713e1bcb37017e1655150ea6ab66a7ae7263ffe2", kill_on_drop: false }`
[INFO] [stderr]     Checking cc v1.0.73
[INFO] [stderr]     Checking gobuild v0.1.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]    --> src/lib.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     kind: ErrorKind,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Error` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:130:10
[INFO] [stdout]     |
[INFO] [stdout] 130 | #[derive(Clone, Debug)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]    --> src/lib.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     kind: ErrorKind,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Error` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:130:10
[INFO] [stdout]     |
[INFO] [stdout] 130 | #[derive(Clone, Debug)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 1.22s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "a2ff5c21a9f1972987f4e7d7713e1bcb37017e1655150ea6ab66a7ae7263ffe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2ff5c21a9f1972987f4e7d7713e1bcb37017e1655150ea6ab66a7ae7263ffe2", kill_on_drop: false }`
[INFO] [stdout] a2ff5c21a9f1972987f4e7d7713e1bcb37017e1655150ea6ab66a7ae7263ffe2