[INFO] fetching crate labyr 0.2.11...
[INFO] checking labyr-0.2.11 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate labyr 0.2.11 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate labyr 0.2.11
[INFO] finished tweaking crates.io crate labyr 0.2.11
[INFO] tweaked toml for crates.io crate labyr 0.2.11 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate labyr 0.2.11 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate labyr 0.2.11 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6968721e9a1f445e6fe248264afbf64ceb5e1de59fca230d50c60c7e82e7630c
[INFO] running `Command { std: "docker" "start" "-a" "6968721e9a1f445e6fe248264afbf64ceb5e1de59fca230d50c60c7e82e7630c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6968721e9a1f445e6fe248264afbf64ceb5e1de59fca230d50c60c7e82e7630c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6968721e9a1f445e6fe248264afbf64ceb5e1de59fca230d50c60c7e82e7630c", kill_on_drop: false }`
[INFO] [stdout] 6968721e9a1f445e6fe248264afbf64ceb5e1de59fca230d50c60c7e82e7630c
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45ba46ed8f7fccf6ddb215d9108a5b25b430af53fcd2ff0b12315da61b765c9c
[INFO] running `Command { std: "docker" "start" "-a" "45ba46ed8f7fccf6ddb215d9108a5b25b430af53fcd2ff0b12315da61b765c9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling anyhow v1.0.83
[INFO] [stderr]     Checking winnow v0.6.5
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking path-dedot v3.1.1
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking clap_builder v4.5.2
[INFO] [stderr]     Checking env_filter v0.1.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking pretty-duration v0.1.1
[INFO] [stderr]     Checking indicatif-log-bridge v0.2.2
[INFO] [stderr]     Checking env_logger v0.11.3
[INFO] [stderr]     Checking path-absolutize v3.1.1
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]     Checking clap v4.5.4
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking toml_edit v0.22.9
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking labyr v0.2.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `learn` is never read
[INFO] [stdout]   --> src/setup/instance.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Task {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 27 |     pub name: String,
[INFO] [stdout] 28 |     pub learn: Vec<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Task` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `learn` is never read
[INFO] [stdout]   --> src/setup/instance.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Task {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 27 |     pub name: String,
[INFO] [stdout] 28 |     pub learn: Vec<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Task` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.04s
[INFO] running `Command { std: "docker" "inspect" "45ba46ed8f7fccf6ddb215d9108a5b25b430af53fcd2ff0b12315da61b765c9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45ba46ed8f7fccf6ddb215d9108a5b25b430af53fcd2ff0b12315da61b765c9c", kill_on_drop: false }`
[INFO] [stdout] 45ba46ed8f7fccf6ddb215d9108a5b25b430af53fcd2ff0b12315da61b765c9c