[INFO] cloning repository https://github.com/dgreen42/kbrecondo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dgreen42/kbrecondo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgreen42%2Fkbrecondo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgreen42%2Fkbrecondo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2422ddb0de32cfc0d924219100eaac2608fccefd
[INFO] checking dgreen42/kbrecondo against try#0f31acebf540c89e4a4d5d114959fe91973419cb for pr-147017
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgreen42%2Fkbrecondo" "/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/dgreen42/kbrecondo
[INFO] finished tweaking git repo https://github.com/dgreen42/kbrecondo
[INFO] tweaked toml for git repo https://github.com/dgreen42/kbrecondo written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dgreen42/kbrecondo on toolchain 0f31acebf540c89e4a4d5d114959fe91973419cb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dgreen42/kbrecondo 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" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking dgreen42/kbrecondo against try#0f31acebf540c89e4a4d5d114959fe91973419cb for pr-147017
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgreen42%2Fkbrecondo" "/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/dgreen42/kbrecondo
[INFO] finished tweaking git repo https://github.com/dgreen42/kbrecondo
[INFO] tweaked toml for git repo https://github.com/dgreen42/kbrecondo written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dgreen42/kbrecondo on toolchain 0f31acebf540c89e4a4d5d114959fe91973419cb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dgreen42/kbrecondo 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" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15e9f6573bb855c786b49d1a5e6bc84f6fee7c0b60e3c0f3c3072a0cbd0d5ba7
[INFO] running `Command { std: "docker" "start" "-a" "15e9f6573bb855c786b49d1a5e6bc84f6fee7c0b60e3c0f3c3072a0cbd0d5ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15e9f6573bb855c786b49d1a5e6bc84f6fee7c0b60e3c0f3c3072a0cbd0d5ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15e9f6573bb855c786b49d1a5e6bc84f6fee7c0b60e3c0f3c3072a0cbd0d5ba7", kill_on_drop: false }`
[INFO] [stdout] 15e9f6573bb855c786b49d1a5e6bc84f6fee7c0b60e3c0f3c3072a0cbd0d5ba7
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9320b52944265a9dd51e1e0bbb492b8d020870ab010426d74b29d591b3c358aa
[INFO] running `Command { std: "docker" "start" "-a" "9320b52944265a9dd51e1e0bbb492b8d020870ab010426d74b29d591b3c358aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking kbrecondo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]    --> src/main.rs:224:33
[INFO] [stdout]     |
[INFO] [stdout] 224 | ...                   let header = &info_anno[0];
[INFO] [stdout]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]    --> src/main.rs:241:25
[INFO] [stdout]     |
[INFO] [stdout] 241 |                     let header = &info_anno[0];
[INFO] [stdout]     |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]    --> src/main.rs:224:33
[INFO] [stdout]     |
[INFO] [stdout] 224 | ...                   let header = &info_anno[0];
[INFO] [stdout]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `header`
[INFO] [stdout]    --> src/main.rs:241:25
[INFO] [stdout]     |
[INFO] [stdout] 241 |                     let header = &info_anno[0];
[INFO] [stdout]     |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_header`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "9320b52944265a9dd51e1e0bbb492b8d020870ab010426d74b29d591b3c358aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9320b52944265a9dd51e1e0bbb492b8d020870ab010426d74b29d591b3c358aa", kill_on_drop: false }`
[INFO] [stdout] 9320b52944265a9dd51e1e0bbb492b8d020870ab010426d74b29d591b3c358aa