Dec 11 08:13:51.758 INFO checking tarka/xcp against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 08:13:51.758 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 08:13:52.200 INFO [stdout] 8f9ce62adc29a1d9cf57dd34000b2908077649d143a44d440d80a0fdd717b6c4
Dec 11 08:13:52.200 INFO running `"docker" "start" "-a" "8f9ce62adc29a1d9cf57dd34000b2908077649d143a44d440d80a0fdd717b6c4"`
Dec 11 08:13:53.514 INFO [stderr] usermod: no changes
Dec 11 08:13:53.828 INFO [stderr]    Compiling serde v1.0.80
Dec 11 08:13:53.828 INFO [stderr]     Checking same-file v1.0.3
Dec 11 08:13:53.828 INFO [stderr]    Compiling escargot v0.3.1
Dec 11 08:13:53.828 INFO [stderr]     Checking log v0.4.5
Dec 11 08:13:53.828 INFO [stderr]     Checking termios v0.3.1
Dec 11 08:13:53.828 INFO [stderr]     Checking clicolors-control v0.2.0
Dec 11 08:13:53.828 INFO [stderr]     Checking term v0.5.1
Dec 11 08:13:53.828 INFO [stderr]     Checking tempfile v3.0.4
Dec 11 08:13:54.853 INFO [stderr]    Compiling syn v0.15.13
Dec 11 08:13:54.924 INFO [stderr]     Checking crossbeam-epoch v0.6.0
Dec 11 08:13:56.524 INFO [stderr]     Checking walkdir v2.2.5
Dec 11 08:13:56.563 INFO [stderr]     Checking regex v0.2.11
Dec 11 08:13:56.809 INFO [stderr]     Checking console v0.6.2
Dec 11 08:13:56.944 INFO [stderr]     Checking globset v0.4.2
Dec 11 08:13:58.529 INFO [stderr]     Checking simplelog v0.5.3
Dec 11 08:13:59.486 INFO [stderr]     Checking crossbeam-channel v0.2.6
Dec 11 08:14:02.764 INFO [stderr]     Checking ignore v0.4.4
Dec 11 08:14:04.135 INFO [stderr]     Checking indicatif v0.9.0
Dec 11 08:14:15.600 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 11 08:14:15.605 INFO [stderr]    Compiling synstructure v0.10.0
Dec 11 08:14:15.607 INFO [stderr]    Compiling structopt-derive v0.2.12
Dec 11 08:14:23.790 INFO [stderr]    Compiling failure_derive v0.1.3
Dec 11 08:14:26.020 INFO [stderr]     Checking structopt v0.2.12
Dec 11 08:14:28.004 INFO [stderr]     Checking failure v0.1.3
Dec 11 08:14:28.796 INFO [stderr]     Checking xcp v0.1.1-alpha.3 (/source)
Dec 11 08:14:50.177 INFO [stderr]     Checking serde_json v1.0.32
Dec 11 08:14:54.230 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:14:54.230 INFO [stderr]   --> tests/lib.rs:51:5
Dec 11 08:14:54.230 INFO [stderr]    |
Dec 11 08:14:54.230 INFO [stderr] 51 |     write!(&file, "{}", text);
Dec 11 08:14:54.230 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:14:54.230 INFO [stderr]    |
Dec 11 08:14:54.231 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 08:14:54.231 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:14:54.231 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 11 08:14:54.231 INFO [stderr] 
Dec 11 08:14:54.231 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:14:54.231 INFO [stderr]   --> tests/lib.rs:79:5
Dec 11 08:14:54.231 INFO [stderr]    |
Dec 11 08:14:54.231 INFO [stderr] 79 |     write!(fd, "{}", data);
Dec 11 08:14:54.231 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:14:54.231 INFO [stderr]    |
Dec 11 08:14:54.231 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:14:54.231 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 11 08:14:54.231 INFO [stderr] 
Dec 11 08:14:54.231 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:14:54.231 INFO [stderr]   --> tests/lib.rs:82:5
Dec 11 08:14:54.231 INFO [stderr]    |
Dec 11 08:14:54.231 INFO [stderr] 82 |     write!(fd, "{}", data);
Dec 11 08:14:54.231 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:14:54.231 INFO [stderr]    |
Dec 11 08:14:54.231 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:14:54.231 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 11 08:14:54.231 INFO [stderr] 
Dec 11 08:14:54.240 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:14:54.240 INFO [stderr]   --> tests/lib.rs:85:5
Dec 11 08:14:54.240 INFO [stderr]    |
Dec 11 08:14:54.240 INFO [stderr] 85 |     write!(fd, "{}", data);
Dec 11 08:14:54.240 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:14:54.240 INFO [stderr]    |
Dec 11 08:14:54.240 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:14:54.240 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 11 08:14:54.240 INFO [stderr] 
Dec 11 08:14:54.999 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
Dec 11 08:14:55.009 INFO [stderr] su: No module specific data is present
Dec 11 08:14:55.676 INFO running `"docker" "inspect" "8f9ce62adc29a1d9cf57dd34000b2908077649d143a44d440d80a0fdd717b6c4"`
Dec 11 08:14:55.990 INFO running `"docker" "rm" "-f" "8f9ce62adc29a1d9cf57dd34000b2908077649d143a44d440d80a0fdd717b6c4"`
Dec 11 08:14:56.280 INFO [stdout] 8f9ce62adc29a1d9cf57dd34000b2908077649d143a44d440d80a0fdd717b6c4