[INFO] fetching crate rusttyc 0.4.2...
[INFO] checking rusttyc-0.4.2 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate rusttyc 0.4.2 into /workspace/builds/worker-85/source
[INFO] validating manifest of crates.io crate rusttyc 0.4.2 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rusttyc 0.4.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rusttyc 0.4.2
[INFO] tweaked toml for crates.io crate rusttyc 0.4.2 written to /workspace/builds/worker-85/source/Cargo.toml
[INFO] crate crates.io crate rusttyc 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb6de3fcdaeab495c2070b113e5b4a0a7d97bac75d6d5a8497f49e453126564e
[INFO] running `Command { std: "docker" "start" "-a" "cb6de3fcdaeab495c2070b113e5b4a0a7d97bac75d6d5a8497f49e453126564e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb6de3fcdaeab495c2070b113e5b4a0a7d97bac75d6d5a8497f49e453126564e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb6de3fcdaeab495c2070b113e5b4a0a7d97bac75d6d5a8497f49e453126564e", kill_on_drop: false }`
[INFO] [stdout] cb6de3fcdaeab495c2070b113e5b4a0a7d97bac75d6d5a8497f49e453126564e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fa82cb91d8f0d8d1796fc92c845bdb0cf99c0dc4e272702be8fdb4c8b7bd205
[INFO] running `Command { std: "docker" "start" "-a" "9fa82cb91d8f0d8d1796fc92c845bdb0cf99c0dc4e272702be8fdb4c8b7bd205", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rusttyc v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> examples/parametrized_function.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |             &params;
[INFO] [stdout]     |             ^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 149 |             let _ = &params;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "9fa82cb91d8f0d8d1796fc92c845bdb0cf99c0dc4e272702be8fdb4c8b7bd205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fa82cb91d8f0d8d1796fc92c845bdb0cf99c0dc4e272702be8fdb4c8b7bd205", kill_on_drop: false }`
[INFO] [stdout] 9fa82cb91d8f0d8d1796fc92c845bdb0cf99c0dc4e272702be8fdb4c8b7bd205