[INFO] crate fehler 1.0.0-alpha.2 is already in cache
[INFO] checking fehler-1.0.0-alpha.2 against try#e6563ac70cbfd3196492061900e9e9793e065e4d for pr-69410
[INFO] extracting crate fehler 1.0.0-alpha.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate fehler 1.0.0-alpha.2 on toolchain e6563ac70cbfd3196492061900e9e9793e065e4d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fehler 1.0.0-alpha.2
[INFO] finished tweaking crates.io crate fehler 1.0.0-alpha.2
[INFO] tweaked toml for crates.io crate fehler 1.0.0-alpha.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate fehler 1.0.0-alpha.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "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" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "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] 610cedd0d3164edde1d4b0e482148841f44dd4235d32015a4d78aa0f66183e80
[INFO] running `"docker" "start" "-a" "610cedd0d3164edde1d4b0e482148841f44dd4235d32015a4d78aa0f66183e80"`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling fehler-macros v1.0.0-alpha.2
[INFO] [stderr]     Checking fehler v1.0.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]  --> tests/no_std.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[throws(i32)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr] 6 | fn no_std_fn() {
[INFO] [stderr] 7 |     throw!(0);
[INFO] [stderr]   |     ---------- any code following this expression is unreachable
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]   = note: this warning originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.86s
[INFO] running `"docker" "inspect" "610cedd0d3164edde1d4b0e482148841f44dd4235d32015a4d78aa0f66183e80"`
[INFO] running `"docker" "rm" "-f" "610cedd0d3164edde1d4b0e482148841f44dd4235d32015a4d78aa0f66183e80"`
[INFO] [stdout] 610cedd0d3164edde1d4b0e482148841f44dd4235d32015a4d78aa0f66183e80