[INFO] crate nom-tracable 0.4.1 is already in cache
[INFO] checking nom-tracable-0.4.1 against try#662bf71cc5bbfe44a109ab5b7205e12ec319754c for pr-67531
[INFO] extracting crate nom-tracable 0.4.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nom-tracable 0.4.1 on toolchain 662bf71cc5bbfe44a109ab5b7205e12ec319754c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+662bf71cc5bbfe44a109ab5b7205e12ec319754c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate nom-tracable 0.4.1
[INFO] finished tweaking crates.io crate nom-tracable 0.4.1
[INFO] tweaked toml for crates.io crate nom-tracable 0.4.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate nom-tracable 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+662bf71cc5bbfe44a109ab5b7205e12ec319754c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+662bf71cc5bbfe44a109ab5b7205e12ec319754c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 23cf39ff189511cc63c0b97d04337b0a1d046170ba4c8101ac4a7f27d242e8a3
[INFO] running `"docker" "start" "-a" "23cf39ff189511cc63c0b97d04337b0a1d046170ba4c8101ac4a7f27d242e8a3"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking bytecount v0.3.2
[INFO] [stderr]    Compiling lexical-core v0.4.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking nom v5.0.1
[INFO] [stderr]     Checking nom_locate v1.0.0
[INFO] [stderr]    Compiling nom-tracable-macros v0.4.1
[INFO] [stderr]     Checking nom-tracable v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `ret`
[INFO] [stderr]   --> examples/example.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let ret = expr(LocatedSpanEx::new_extra("1-1+1+1-1", info));
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_ret`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.00s
[INFO] running `"docker" "inspect" "23cf39ff189511cc63c0b97d04337b0a1d046170ba4c8101ac4a7f27d242e8a3"`
[INFO] running `"docker" "rm" "-f" "23cf39ff189511cc63c0b97d04337b0a1d046170ba4c8101ac4a7f27d242e8a3"`
[INFO] [stdout] 23cf39ff189511cc63c0b97d04337b0a1d046170ba4c8101ac4a7f27d242e8a3