[INFO] fetching crate xc2bit 0.0.4...
[INFO] checking xc2bit-0.0.4 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate xc2bit 0.0.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate xc2bit 0.0.4 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate xc2bit 0.0.4
[INFO] finished tweaking crates.io crate xc2bit 0.0.4
[INFO] tweaked toml for crates.io crate xc2bit 0.0.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate xc2bit 0.0.4 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] c9a7d9037b173804b4f72183d703a7a005264e8f8049202ce1c4b48baaa35d3c
[INFO] running `"docker" "start" "-a" "c9a7d9037b173804b4f72183d703a7a005264e8f8049202ce1c4b48baaa35d3c"`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking num-traits v0.2.0
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]    Compiling xc2bit v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking jedec v0.0.3
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling bittwiddler v0.0.2
[INFO] [stderr]     Checking serde_json v1.0.9
[INFO] [stderr]     Checking yosys-netlist-json v0.0.3
[INFO] [stderr] warning: function is never used: `run_one_reftest`
[INFO] [stderr]    --> src/lib.rs:123:8
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn run_one_reftest(jed_filename: &'static str) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.22s
[INFO] running `"docker" "inspect" "c9a7d9037b173804b4f72183d703a7a005264e8f8049202ce1c4b48baaa35d3c"`
[INFO] running `"docker" "rm" "-f" "c9a7d9037b173804b4f72183d703a7a005264e8f8049202ce1c4b48baaa35d3c"`
[INFO] [stdout] c9a7d9037b173804b4f72183d703a7a005264e8f8049202ce1c4b48baaa35d3c