[INFO] fetching crate rust-forth-compiler 0.5.3...
[INFO] checking rust-forth-compiler-0.5.3 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate rust-forth-compiler 0.5.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rust-forth-compiler 0.5.3 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-forth-compiler 0.5.3
[INFO] finished tweaking crates.io crate rust-forth-compiler 0.5.3
[INFO] tweaked toml for crates.io crate rust-forth-compiler 0.5.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate rust-forth-compiler 0.5.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2177b89b26bcd4c48ead1f761b0ef0bd82bba5059849c9ad185f71467a1f0f3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b2177b89b26bcd4c48ead1f761b0ef0bd82bba5059849c9ad185f71467a1f0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2177b89b26bcd4c48ead1f761b0ef0bd82bba5059849c9ad185f71467a1f0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2177b89b26bcd4c48ead1f761b0ef0bd82bba5059849c9ad185f71467a1f0f3", kill_on_drop: false }`
[INFO] [stdout] b2177b89b26bcd4c48ead1f761b0ef0bd82bba5059849c9ad185f71467a1f0f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9c2883aa715ed7535450cf4c7e0250ecac0d168c82f0874f7b16a80f5895c40b
[INFO] running `Command { std: "docker" "start" "-a" "9c2883aa715ed7535450cf4c7e0250ecac0d168c82f0874f7b16a80f5895c40b", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-forth-tokenizer v0.2.0
[INFO] [stderr]     Checking rust-simple-stack-processor v0.7.0
[INFO] [stderr]     Checking rust-forth-compiler v0.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `prelude_start`
[INFO] [stdout]    --> src/lib.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     prelude_start: usize,
[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: `prelude_start`
[INFO] [stdout]    --> src/lib.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     prelude_start: usize,
[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 0.52s
[INFO] running `Command { std: "docker" "inspect" "9c2883aa715ed7535450cf4c7e0250ecac0d168c82f0874f7b16a80f5895c40b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c2883aa715ed7535450cf4c7e0250ecac0d168c82f0874f7b16a80f5895c40b", kill_on_drop: false }`
[INFO] [stdout] 9c2883aa715ed7535450cf4c7e0250ecac0d168c82f0874f7b16a80f5895c40b