[INFO] fetching crate rusk 0.1.11...
[INFO] checking rusk-0.1.11 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate rusk 0.1.11 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rusk 0.1.11 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rusk 0.1.11
[INFO] finished tweaking crates.io crate rusk 0.1.11
[INFO] tweaked toml for crates.io crate rusk 0.1.11 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rusk 0.1.11 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ryu v1.0.2
[INFO] [stderr]   Downloaded unicode-xid v0.2.0
[INFO] [stderr]   Downloaded quote v1.0.2
[INFO] [stderr]   Downloaded serde_derive v1.0.103
[INFO] [stderr]   Downloaded itoa v0.4.4
[INFO] [stderr]   Downloaded syn v1.0.11
[INFO] [stderr]   Downloaded serde v1.0.103
[INFO] [stderr]   Downloaded serde_json v1.0.42
[INFO] [stderr]   Downloaded proc-macro2 v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9487e58891e63b565743785dbc1fbdb1a86e509d19fcb5f40a3c45d8b7cef1e8
[INFO] running `Command { std: "docker" "start" "-a" "9487e58891e63b565743785dbc1fbdb1a86e509d19fcb5f40a3c45d8b7cef1e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9487e58891e63b565743785dbc1fbdb1a86e509d19fcb5f40a3c45d8b7cef1e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9487e58891e63b565743785dbc1fbdb1a86e509d19fcb5f40a3c45d8b7cef1e8", kill_on_drop: false }`
[INFO] [stdout] 9487e58891e63b565743785dbc1fbdb1a86e509d19fcb5f40a3c45d8b7cef1e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 877e5b3184d5048e8f1ff35f02c6660f420f893dda4804b80f95cadeae4ec98f
[INFO] running `Command { std: "docker" "start" "-a" "877e5b3184d5048e8f1ff35f02c6660f420f893dda4804b80f95cadeae4ec98f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]     Checking rusk v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `prefix_op`
[INFO] [stdout]    --> src/parser.rs:525:2
[INFO] [stdout]     |
[INFO] [stdout] 525 |     prefix_op: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[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: field is never read: `prefix_op`
[INFO] [stdout]    --> src/parser.rs:525:2
[INFO] [stdout]     |
[INFO] [stdout] 525 |     prefix_op: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.69s
[INFO] running `Command { std: "docker" "inspect" "877e5b3184d5048e8f1ff35f02c6660f420f893dda4804b80f95cadeae4ec98f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "877e5b3184d5048e8f1ff35f02c6660f420f893dda4804b80f95cadeae4ec98f", kill_on_drop: false }`
[INFO] [stdout] 877e5b3184d5048e8f1ff35f02c6660f420f893dda4804b80f95cadeae4ec98f