Dec 07 01:46:01.454 INFO testing rotor-carbon-0.7.0 against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 07 01:46:01.454 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 07 01:46:01.847 INFO [stdout] 49029bc59a07585353d1dde2e307aa395c0beb140465fe003ebf7d04483624fb
Dec 07 01:46:01.850 INFO running `"docker" "start" "-a" "49029bc59a07585353d1dde2e307aa395c0beb140465fe003ebf7d04483624fb"`
Dec 07 01:46:02.876 INFO [stderr] usermod: no changes
Dec 07 01:46:02.981 INFO [stderr]    Compiling rotor-carbon v0.7.0 (/source)
Dec 07 01:46:04.456 INFO [stderr] warning: variable does not need to be mutable
Dec 07 01:46:04.456 INFO [stderr]   --> src/sender.rs:19:17
Dec 07 01:46:04.456 INFO [stderr]    |
Dec 07 01:46:04.456 INFO [stderr] 19 |             let mut buf = trans.output();
Dec 07 01:46:04.456 INFO [stderr]    |                 ----^^^
Dec 07 01:46:04.456 INFO [stderr]    |                 |
Dec 07 01:46:04.456 INFO [stderr]    |                 help: remove this `mut`
Dec 07 01:46:04.456 INFO [stderr]    |
Dec 07 01:46:04.456 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 01:46:04.456 INFO [stderr] 
Dec 07 01:46:04.456 INFO [stderr] warning: variable does not need to be mutable
Dec 07 01:46:04.456 INFO [stderr]   --> src/sender.rs:19:17
Dec 07 01:46:04.456 INFO [stderr]    |
Dec 07 01:46:04.456 INFO [stderr] 19 |             let mut buf = trans.output();
Dec 07 01:46:04.456 INFO [stderr]    |                 ----^^^
Dec 07 01:46:04.457 INFO [stderr]    |                 |
Dec 07 01:46:04.457 INFO [stderr]    |                 help: remove this `mut`
Dec 07 01:46:04.457 INFO [stderr] 
Dec 07 01:46:04.468 INFO [stderr] warning: variable does not need to be mutable
Dec 07 01:46:04.468 INFO [stderr]   --> src/sender.rs:32:17
Dec 07 01:46:04.468 INFO [stderr]    |
Dec 07 01:46:04.468 INFO [stderr] 32 |             let mut buf = trans.output();
Dec 07 01:46:04.468 INFO [stderr]    |                 ----^^^
Dec 07 01:46:04.468 INFO [stderr]    |                 |
Dec 07 01:46:04.468 INFO [stderr]    |                 help: remove this `mut`
Dec 07 01:46:04.468 INFO [stderr] 
Dec 07 01:46:04.528 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
Dec 07 01:46:04.537 INFO [stderr] su: No module specific data is present
Dec 07 01:46:05.096 INFO running `"docker" "inspect" "49029bc59a07585353d1dde2e307aa395c0beb140465fe003ebf7d04483624fb"`
Dec 07 01:46:05.370 INFO running `"docker" "rm" "-f" "49029bc59a07585353d1dde2e307aa395c0beb140465fe003ebf7d04483624fb"`
Dec 07 01:46:05.712 INFO [stdout] 49029bc59a07585353d1dde2e307aa395c0beb140465fe003ebf7d04483624fb
Dec 07 01:46:05.720 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 07 01:46:06.406 INFO [stdout] 891a96ebfbab9a92dd8d36d8e8562ba49852bcef6a41726228580fa531dffee0
Dec 07 01:46:06.407 INFO running `"docker" "start" "-a" "891a96ebfbab9a92dd8d36d8e8562ba49852bcef6a41726228580fa531dffee0"`
Dec 07 01:46:08.167 INFO [stderr] usermod: no changes
Dec 07 01:46:08.338 INFO [stderr]    Compiling rotor-carbon v0.7.0 (/source)
Dec 07 01:46:10.940 INFO [stderr] warning: variable does not need to be mutable
Dec 07 01:46:10.940 INFO [stderr]   --> src/sender.rs:19:17
Dec 07 01:46:10.940 INFO [stderr]    |
Dec 07 01:46:10.940 INFO [stderr] 19 |             let mut buf = trans.output();
Dec 07 01:46:10.940 INFO [stderr]    |                 ----^^^
Dec 07 01:46:10.940 INFO [stderr]    |                 |
Dec 07 01:46:10.940 INFO [stderr]    |                 help: remove this `mut`
Dec 07 01:46:10.940 INFO [stderr]    |
Dec 07 01:46:10.940 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 01:46:10.940 INFO [stderr] 
Dec 07 01:46:10.940 INFO [stderr] warning: variable does not need to be mutable
Dec 07 01:46:10.940 INFO [stderr]   --> src/sender.rs:19:17
Dec 07 01:46:10.940 INFO [stderr]    |
Dec 07 01:46:10.940 INFO [stderr] 19 |             let mut buf = trans.output();
Dec 07 01:46:10.940 INFO [stderr]    |                 ----^^^
Dec 07 01:46:10.940 INFO [stderr]    |                 |
Dec 07 01:46:10.940 INFO [stderr]    |                 help: remove this `mut`
Dec 07 01:46:10.940 INFO [stderr] 
Dec 07 01:46:10.944 INFO [stderr] warning: variable does not need to be mutable
Dec 07 01:46:10.944 INFO [stderr]   --> src/sender.rs:32:17
Dec 07 01:46:10.944 INFO [stderr]    |
Dec 07 01:46:10.944 INFO [stderr] 32 |             let mut buf = trans.output();
Dec 07 01:46:10.944 INFO [stderr]    |                 ----^^^
Dec 07 01:46:10.944 INFO [stderr]    |                 |
Dec 07 01:46:10.944 INFO [stderr]    |                 help: remove this `mut`
Dec 07 01:46:10.944 INFO [stderr] 
Dec 07 01:46:15.229 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.03s
Dec 07 01:46:15.235 INFO [stderr] su: No module specific data is present
Dec 07 01:46:16.380 INFO running `"docker" "inspect" "891a96ebfbab9a92dd8d36d8e8562ba49852bcef6a41726228580fa531dffee0"`
Dec 07 01:46:16.652 INFO running `"docker" "rm" "-f" "891a96ebfbab9a92dd8d36d8e8562ba49852bcef6a41726228580fa531dffee0"`
Dec 07 01:46:16.976 INFO [stdout] 891a96ebfbab9a92dd8d36d8e8562ba49852bcef6a41726228580fa531dffee0