Dec 14 17:44:39.381 INFO testing tac-0.2.3 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 17:44:39.381 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 14 17:44:39.522 INFO [stdout] 91edd4bf7cc008338245d6df29f7e4b06e8e42f19920a55377aa33dd5454be4d
Dec 14 17:44:39.524 INFO running `"docker" "start" "-a" "91edd4bf7cc008338245d6df29f7e4b06e8e42f19920a55377aa33dd5454be4d"`
Dec 14 17:44:39.889 INFO [stderr] usermod: no changes
Dec 14 17:44:39.943 INFO [stderr]    Compiling memmap v0.5.2
Dec 14 17:44:39.946 INFO [stderr]    Compiling uuid v0.4.0
Dec 14 17:44:40.683 INFO [stderr]    Compiling tac v0.2.3 (/source)
Dec 14 17:44:41.135 INFO [stderr] warning: variable does not need to be mutable
Dec 14 17:44:41.135 INFO [stderr]   --> src/main.rs:64:16
Dec 14 17:44:41.135 INFO [stderr]    |
Dec 14 17:44:41.135 INFO [stderr] 64 | fn print_bytes(mut stdout: &mut StdoutLock, bytes: &[u8]) {
Dec 14 17:44:41.135 INFO [stderr]    |                ----^^^^^^
Dec 14 17:44:41.135 INFO [stderr]    |                |
Dec 14 17:44:41.135 INFO [stderr]    |                help: remove this `mut`
Dec 14 17:44:41.135 INFO [stderr]    |
Dec 14 17:44:41.135 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 17:44:41.135 INFO [stderr] 
Dec 14 17:44:41.493 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
Dec 14 17:44:41.496 INFO [stderr] su: No module specific data is present
Dec 14 17:44:41.831 INFO running `"docker" "inspect" "91edd4bf7cc008338245d6df29f7e4b06e8e42f19920a55377aa33dd5454be4d"`
Dec 14 17:44:41.904 INFO running `"docker" "rm" "-f" "91edd4bf7cc008338245d6df29f7e4b06e8e42f19920a55377aa33dd5454be4d"`
Dec 14 17:44:41.981 INFO [stdout] 91edd4bf7cc008338245d6df29f7e4b06e8e42f19920a55377aa33dd5454be4d
Dec 14 17:44:41.983 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 14 17:44:42.200 INFO [stdout] 328092b8182e5ef400086aa7d7e70a4898032bea7f270f056239d004c9be51eb
Dec 14 17:44:42.202 INFO running `"docker" "start" "-a" "328092b8182e5ef400086aa7d7e70a4898032bea7f270f056239d004c9be51eb"`
Dec 14 17:44:42.642 INFO [stderr] usermod: no changes
Dec 14 17:44:42.690 INFO [stderr]    Compiling tac v0.2.3 (/source)
Dec 14 17:44:43.451 INFO [stderr] warning: variable does not need to be mutable
Dec 14 17:44:43.451 INFO [stderr]   --> src/main.rs:64:16
Dec 14 17:44:43.452 INFO [stderr]    |
Dec 14 17:44:43.452 INFO [stderr] 64 | fn print_bytes(mut stdout: &mut StdoutLock, bytes: &[u8]) {
Dec 14 17:44:43.452 INFO [stderr]    |                ----^^^^^^
Dec 14 17:44:43.452 INFO [stderr]    |                |
Dec 14 17:44:43.453 INFO [stderr]    |                help: remove this `mut`
Dec 14 17:44:43.453 INFO [stderr]    |
Dec 14 17:44:43.453 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 17:44:43.453 INFO [stderr] 
Dec 14 17:44:43.988 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
Dec 14 17:44:43.992 INFO [stderr] su: No module specific data is present
Dec 14 17:44:44.459 INFO running `"docker" "inspect" "328092b8182e5ef400086aa7d7e70a4898032bea7f270f056239d004c9be51eb"`
Dec 14 17:44:44.676 INFO running `"docker" "rm" "-f" "328092b8182e5ef400086aa7d7e70a4898032bea7f270f056239d004c9be51eb"`
Dec 14 17:44:44.899 INFO [stdout] 328092b8182e5ef400086aa7d7e70a4898032bea7f270f056239d004c9be51eb
Dec 14 17:44:44.901 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 14 17:44:45.245 INFO [stdout] 7c5ea84e451af55e1394d6e4a86c00e21d1b09f76444cd27726b5aa8ec8e6f3a
Dec 14 17:44:45.247 INFO running `"docker" "start" "-a" "7c5ea84e451af55e1394d6e4a86c00e21d1b09f76444cd27726b5aa8ec8e6f3a"`
Dec 14 17:44:45.772 INFO [stderr] usermod: no changes
Dec 14 17:44:45.847 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 14 17:44:45.863 INFO [stderr]      Running /target/debug/deps/tac-dd6599a2c19115c5
Dec 14 17:44:45.868 INFO [stdout] 
Dec 14 17:44:45.868 INFO [stdout] running 0 tests
Dec 14 17:44:45.868 INFO [stdout] 
Dec 14 17:44:45.868 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 17:44:45.868 INFO [stdout] 
Dec 14 17:44:45.870 INFO [stderr] su: No module specific data is present
Dec 14 17:44:46.746 INFO running `"docker" "inspect" "7c5ea84e451af55e1394d6e4a86c00e21d1b09f76444cd27726b5aa8ec8e6f3a"`
Dec 14 17:44:46.834 INFO running `"docker" "rm" "-f" "7c5ea84e451af55e1394d6e4a86c00e21d1b09f76444cd27726b5aa8ec8e6f3a"`
Dec 14 17:44:46.912 INFO [stdout] 7c5ea84e451af55e1394d6e4a86c00e21d1b09f76444cd27726b5aa8ec8e6f3a