Dec 19 07:34:50.437 INFO checking tarka/xcp against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 07:34:50.437 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/tarka/xcp:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 07:34:50.968 INFO [stdout] f83d8d0d614acaff2a85d5566dcf3da574ed2b761667406cca4fb06a66dfceea
Dec 19 07:34:50.972 INFO running `"docker" "start" "-a" "f83d8d0d614acaff2a85d5566dcf3da574ed2b761667406cca4fb06a66dfceea"`
Dec 19 07:34:53.564 INFO [stderr]    Compiling serde v1.0.80
Dec 19 07:34:53.577 INFO [stderr]    Compiling escargot v0.3.1
Dec 19 07:34:53.580 INFO [stderr]     Checking log v0.4.5
Dec 19 07:34:53.580 INFO [stderr]     Checking termios v0.3.1
Dec 19 07:34:53.580 INFO [stderr]     Checking clicolors-control v0.2.0
Dec 19 07:34:53.607 INFO [stderr]     Checking tempfile v3.0.4
Dec 19 07:34:53.607 INFO [stderr]    Compiling syn v0.15.13
Dec 19 07:34:53.613 INFO [stderr]     Checking aho-corasick v0.6.8
Dec 19 07:34:55.704 INFO [stderr]     Checking simplelog v0.5.3
Dec 19 07:34:56.268 INFO [stderr]     Checking regex v1.0.5
Dec 19 07:34:56.270 INFO [stderr]     Checking regex v0.2.11
Dec 19 07:35:01.804 INFO [stderr]     Checking globset v0.4.2
Dec 19 07:35:01.804 INFO [stderr]     Checking console v0.6.2
Dec 19 07:35:02.948 INFO [stderr]     Checking indicatif v0.9.0
Dec 19 07:35:03.850 INFO [stderr]     Checking ignore v0.4.4
Dec 19 07:35:13.692 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 19 07:35:13.692 INFO [stderr]    Compiling synstructure v0.10.0
Dec 19 07:35:13.692 INFO [stderr]    Compiling structopt-derive v0.2.12
Dec 19 07:35:21.064 INFO [stderr]     Checking structopt v0.2.12
Dec 19 07:35:21.164 INFO [stderr]    Compiling failure_derive v0.1.3
Dec 19 07:35:24.008 INFO [stderr]     Checking failure v0.1.3
Dec 19 07:35:24.833 INFO [stderr]     Checking xcp v0.1.1-alpha.3 (/opt/crater/workdir)
Dec 19 07:35:47.422 INFO [stderr]     Checking serde_json v1.0.32
Dec 19 07:35:51.440 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:35:51.440 INFO [stderr]   --> tests/lib.rs:51:5
Dec 19 07:35:51.440 INFO [stderr]    |
Dec 19 07:35:51.440 INFO [stderr] 51 |     write!(&file, "{}", text);
Dec 19 07:35:51.440 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:35:51.440 INFO [stderr]    |
Dec 19 07:35:51.440 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 07:35:51.440 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:35:51.440 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 19 07:35:51.440 INFO [stderr] 
Dec 19 07:35:51.440 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:35:51.440 INFO [stderr]   --> tests/lib.rs:79:5
Dec 19 07:35:51.440 INFO [stderr]    |
Dec 19 07:35:51.440 INFO [stderr] 79 |     write!(fd, "{}", data);
Dec 19 07:35:51.440 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:35:51.440 INFO [stderr]    |
Dec 19 07:35:51.440 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:35:51.440 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 19 07:35:51.440 INFO [stderr] 
Dec 19 07:35:51.440 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:35:51.440 INFO [stderr]   --> tests/lib.rs:82:5
Dec 19 07:35:51.440 INFO [stderr]    |
Dec 19 07:35:51.440 INFO [stderr] 82 |     write!(fd, "{}", data);
Dec 19 07:35:51.440 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:35:51.440 INFO [stderr]    |
Dec 19 07:35:51.440 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:35:51.440 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 19 07:35:51.440 INFO [stderr] 
Dec 19 07:35:51.440 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:35:51.440 INFO [stderr]   --> tests/lib.rs:85:5
Dec 19 07:35:51.440 INFO [stderr]    |
Dec 19 07:35:51.440 INFO [stderr] 85 |     write!(fd, "{}", data);
Dec 19 07:35:51.440 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:35:51.440 INFO [stderr]    |
Dec 19 07:35:51.440 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:35:51.440 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 19 07:35:51.440 INFO [stderr] 
Dec 19 07:35:51.984 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 58.71s
Dec 19 07:35:52.746 INFO running `"docker" "inspect" "f83d8d0d614acaff2a85d5566dcf3da574ed2b761667406cca4fb06a66dfceea"`
Dec 19 07:35:53.027 INFO running `"docker" "rm" "-f" "f83d8d0d614acaff2a85d5566dcf3da574ed2b761667406cca4fb06a66dfceea"`
Dec 19 07:35:53.277 INFO [stdout] f83d8d0d614acaff2a85d5566dcf3da574ed2b761667406cca4fb06a66dfceea