[INFO] fetching crate cpython 0.5.0...
[INFO] checking cpython-0.5.0 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate cpython 0.5.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate cpython 0.5.0 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate cpython 0.5.0
[INFO] finished tweaking crates.io crate cpython 0.5.0
[INFO] tweaked toml for crates.io crate cpython 0.5.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate cpython 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded python27-sys v0.5.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 413e2c2926fd1e8fe9a7b0a6b760bc6830f1064bbefee09aa2adf3eb0db746c3
[INFO] running `"docker" "start" "-a" "413e2c2926fd1e8fe9a7b0a6b760bc6830f1064bbefee09aa2adf3eb0db746c3"`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling cpython v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling paste-impl v0.1.10
[INFO] [stderr]    Compiling python3-sys v0.5.0
[INFO] [stderr]     Checking paste v0.1.10
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/argparse.rs:431:52
[INFO] [stderr]     |
[INFO] [stderr] 431 |     ( $py:expr, $iter:expr, $body:block, [] ) => { $body };
[INFO] [stderr]     |                                                    ^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/argparse.rs:431:52
[INFO] [stderr]     |
[INFO] [stderr] 431 |     ( $py:expr, $iter:expr, $body:block, [] ) => { $body };
[INFO] [stderr]     |                                                    ^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.73s
[INFO] running `"docker" "inspect" "413e2c2926fd1e8fe9a7b0a6b760bc6830f1064bbefee09aa2adf3eb0db746c3"`
[INFO] running `"docker" "rm" "-f" "413e2c2926fd1e8fe9a7b0a6b760bc6830f1064bbefee09aa2adf3eb0db746c3"`
[INFO] [stdout] 413e2c2926fd1e8fe9a7b0a6b760bc6830f1064bbefee09aa2adf3eb0db746c3