[INFO] fetching crate tender 0.1.1...
[INFO] checking tender-0.1.1 against master#bbe853615821442ef11d6cd42a30a73432b38d89 for pr-154205
[INFO] extracting crate tender 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate tender 0.1.1
[INFO] finished tweaking crates.io crate tender 0.1.1
[INFO] tweaked toml for crates.io crate tender 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tender 0.1.1 on toolchain bbe853615821442ef11d6cd42a30a73432b38d89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.9.3 (available: v0.11.10)
[INFO] [stderr]       Adding fastrand v1.9.0 (available: v2.3.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sync-wait-group v0.1.1
[INFO] [stderr]   Downloaded watch v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9c9ba178a8c5c0f43bc3c1bcdb93fde25100ecc18ffca8957e3d30b10df8dfa
[INFO] running `Command { std: "docker" "start" "-a" "a9c9ba178a8c5c0f43bc3c1bcdb93fde25100ecc18ffca8957e3d30b10df8dfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9c9ba178a8c5c0f43bc3c1bcdb93fde25100ecc18ffca8957e3d30b10df8dfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9c9ba178a8c5c0f43bc3c1bcdb93fde25100ecc18ffca8957e3d30b10df8dfa", kill_on_drop: false }`
[INFO] [stdout] a9c9ba178a8c5c0f43bc3c1bcdb93fde25100ecc18ffca8957e3d30b10df8dfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53057691f7b33d2b89be46bbe80e527ceb2dd2a847255b00c5c9ff7e12bf80eb
[INFO] running `Command { std: "docker" "start" "-a" "53057691f7b33d2b89be46bbe80e527ceb2dd2a847255b00c5c9ff7e12bf80eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking regex-syntax v0.8.10
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking humantime v2.3.0
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking watch v0.2.3
[INFO] [stderr]     Checking sync-wait-group v0.1.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking tender v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core/observer.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn run(mut self) {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core/observer.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn run(mut self) {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.63s
[INFO] running `Command { std: "docker" "inspect" "53057691f7b33d2b89be46bbe80e527ceb2dd2a847255b00c5c9ff7e12bf80eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53057691f7b33d2b89be46bbe80e527ceb2dd2a847255b00c5c9ff7e12bf80eb", kill_on_drop: false }`
[INFO] [stdout] 53057691f7b33d2b89be46bbe80e527ceb2dd2a847255b00c5c9ff7e12bf80eb