[INFO] fetching crate flaky-finder 0.2.22...
[INFO] checking flaky-finder-0.2.22 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate flaky-finder 0.2.22 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate flaky-finder 0.2.22 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flaky-finder 0.2.22
[INFO] finished tweaking crates.io crate flaky-finder 0.2.22
[INFO] tweaked toml for crates.io crate flaky-finder 0.2.22 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate flaky-finder 0.2.22 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 878a01bdcd130a259cc9220f3f5f5ad82a9f762f0cadca3af7fb71d73babfa0e
[INFO] running `Command { std: "docker" "start" "-a" "878a01bdcd130a259cc9220f3f5f5ad82a9f762f0cadca3af7fb71d73babfa0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "878a01bdcd130a259cc9220f3f5f5ad82a9f762f0cadca3af7fb71d73babfa0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "878a01bdcd130a259cc9220f3f5f5ad82a9f762f0cadca3af7fb71d73babfa0e", kill_on_drop: false }`
[INFO] [stdout] 878a01bdcd130a259cc9220f3f5f5ad82a9f762f0cadca3af7fb71d73babfa0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bd268f184d7d0c14ab292d882c2d4422fcf3903c5b750ae08aeba826c60b2de
[INFO] running `Command { std: "docker" "start" "-a" "9bd268f184d7d0c14ab292d882c2d4422fcf3903c5b750ae08aeba826c60b2de", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking console v0.9.0
[INFO] [stderr]     Checking indicatif v0.12.0
[INFO] [stderr]     Checking flaky-finder v0.2.22 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `exit_status` is never read
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub(crate) struct FlakyFinder {
[INFO] [stdout]    |                   ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     exit_status: Option<ExitStatus>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FlakyFinder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `exit_status` is never read
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub(crate) struct FlakyFinder {
[INFO] [stdout]    |                   ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     exit_status: Option<ExitStatus>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FlakyFinder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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` profile [unoptimized + debuginfo] target(s) in 6.30s
[INFO] running `Command { std: "docker" "inspect" "9bd268f184d7d0c14ab292d882c2d4422fcf3903c5b750ae08aeba826c60b2de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bd268f184d7d0c14ab292d882c2d4422fcf3903c5b750ae08aeba826c60b2de", kill_on_drop: false }`
[INFO] [stdout] 9bd268f184d7d0c14ab292d882c2d4422fcf3903c5b750ae08aeba826c60b2de