Dec 14 22:45:15.906 INFO testing rotor-carbon-0.7.0 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 22:45:15.906 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 22:45:16.544 INFO [stdout] ff1b85bf4c0d7bc0de23b11532773ff6ab663b571a87e21d3c1488e3266f2587
Dec 14 22:45:16.547 INFO running `"docker" "start" "-a" "ff1b85bf4c0d7bc0de23b11532773ff6ab663b571a87e21d3c1488e3266f2587"`
Dec 14 22:45:18.875 INFO [stderr] usermod: no changes
Dec 14 22:45:19.032 INFO [stderr]    Compiling rotor-carbon v0.7.0 (/source)
Dec 14 22:45:21.735 INFO [stderr] warning: variable does not need to be mutable
Dec 14 22:45:21.735 INFO [stderr]   --> src/sender.rs:19:17
Dec 14 22:45:21.735 INFO [stderr]    |
Dec 14 22:45:21.735 INFO [stderr] 19 |             let mut buf = trans.output();
Dec 14 22:45:21.735 INFO [stderr]    |                 ----^^^
Dec 14 22:45:21.735 INFO [stderr]    |                 |
Dec 14 22:45:21.735 INFO [stderr]    |                 help: remove this `mut`
Dec 14 22:45:21.735 INFO [stderr]    |
Dec 14 22:45:21.735 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 22:45:21.735 INFO [stderr] 
Dec 14 22:45:21.735 INFO [stderr] warning: variable does not need to be mutable
Dec 14 22:45:21.735 INFO [stderr]   --> src/sender.rs:19:17
Dec 14 22:45:21.735 INFO [stderr]    |
Dec 14 22:45:21.735 INFO [stderr] 19 |             let mut buf = trans.output();
Dec 14 22:45:21.735 INFO [stderr]    |                 ----^^^
Dec 14 22:45:21.735 INFO [stderr]    |                 |
Dec 14 22:45:21.735 INFO [stderr]    |                 help: remove this `mut`
Dec 14 22:45:21.735 INFO [stderr] 
Dec 14 22:45:21.736 INFO [stderr] warning: variable does not need to be mutable
Dec 14 22:45:21.736 INFO [stderr]   --> src/sender.rs:32:17
Dec 14 22:45:21.736 INFO [stderr]    |
Dec 14 22:45:21.736 INFO [stderr] 32 |             let mut buf = trans.output();
Dec 14 22:45:21.736 INFO [stderr]    |                 ----^^^
Dec 14 22:45:21.736 INFO [stderr]    |                 |
Dec 14 22:45:21.736 INFO [stderr]    |                 help: remove this `mut`
Dec 14 22:45:21.736 INFO [stderr] 
Dec 14 22:45:21.800 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.90s
Dec 14 22:45:21.813 INFO [stderr] su: No module specific data is present
Dec 14 22:45:22.963 INFO running `"docker" "inspect" "ff1b85bf4c0d7bc0de23b11532773ff6ab663b571a87e21d3c1488e3266f2587"`
Dec 14 22:45:23.321 INFO running `"docker" "rm" "-f" "ff1b85bf4c0d7bc0de23b11532773ff6ab663b571a87e21d3c1488e3266f2587"`
Dec 14 22:45:23.703 INFO [stdout] ff1b85bf4c0d7bc0de23b11532773ff6ab663b571a87e21d3c1488e3266f2587
Dec 14 22:45:23.707 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 22:45:24.259 INFO [stdout] 41e20848d72c14cb2ec7b35d2a0ffe7d94d5b4461821e32dff69fd4ce4b93cea
Dec 14 22:45:24.261 INFO running `"docker" "start" "-a" "41e20848d72c14cb2ec7b35d2a0ffe7d94d5b4461821e32dff69fd4ce4b93cea"`
Dec 14 22:45:25.880 INFO [stderr] usermod: no changes
Dec 14 22:45:26.123 INFO [stderr]    Compiling rotor-carbon v0.7.0 (/source)
Dec 14 22:45:29.111 INFO [stderr] warning: variable does not need to be mutable
Dec 14 22:45:29.111 INFO [stderr]   --> src/sender.rs:19:17
Dec 14 22:45:29.111 INFO [stderr]    |
Dec 14 22:45:29.111 INFO [stderr] 19 |             let mut buf = trans.output();
Dec 14 22:45:29.111 INFO [stderr]    |                 ----^^^
Dec 14 22:45:29.111 INFO [stderr]    |                 |
Dec 14 22:45:29.111 INFO [stderr]    |                 help: remove this `mut`
Dec 14 22:45:29.111 INFO [stderr]    |
Dec 14 22:45:29.111 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 22:45:29.111 INFO [stderr] 
Dec 14 22:45:29.111 INFO [stderr] warning: variable does not need to be mutable
Dec 14 22:45:29.111 INFO [stderr]   --> src/sender.rs:19:17
Dec 14 22:45:29.111 INFO [stderr]    |
Dec 14 22:45:29.111 INFO [stderr] 19 |             let mut buf = trans.output();
Dec 14 22:45:29.111 INFO [stderr]    |                 ----^^^
Dec 14 22:45:29.111 INFO [stderr]    |                 |
Dec 14 22:45:29.111 INFO [stderr]    |                 help: remove this `mut`
Dec 14 22:45:29.111 INFO [stderr] 
Dec 14 22:45:29.119 INFO [stderr] warning: variable does not need to be mutable
Dec 14 22:45:29.119 INFO [stderr]   --> src/sender.rs:32:17
Dec 14 22:45:29.119 INFO [stderr]    |
Dec 14 22:45:29.119 INFO [stderr] 32 |             let mut buf = trans.output();
Dec 14 22:45:29.119 INFO [stderr]    |                 ----^^^
Dec 14 22:45:29.119 INFO [stderr]    |                 |
Dec 14 22:45:29.119 INFO [stderr]    |                 help: remove this `mut`
Dec 14 22:45:29.119 INFO [stderr] 
Dec 14 22:45:33.482 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.56s
Dec 14 22:45:33.488 INFO [stderr] su: No module specific data is present
Dec 14 22:45:34.781 INFO running `"docker" "inspect" "41e20848d72c14cb2ec7b35d2a0ffe7d94d5b4461821e32dff69fd4ce4b93cea"`
Dec 14 22:45:35.123 INFO running `"docker" "rm" "-f" "41e20848d72c14cb2ec7b35d2a0ffe7d94d5b4461821e32dff69fd4ce4b93cea"`
Dec 14 22:45:35.495 INFO [stdout] 41e20848d72c14cb2ec7b35d2a0ffe7d94d5b4461821e32dff69fd4ce4b93cea