Dec 12 07:27:16.073 INFO checking skylane-0.1.2 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 07:27:16.073 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 12 07:27:16.601 INFO [stdout] c752c85762eacfe8ed3365444b67323271efc374d32a39a8b81827a0d26bd313
Dec 12 07:27:16.604 INFO running `"docker" "start" "-a" "c752c85762eacfe8ed3365444b67323271efc374d32a39a8b81827a0d26bd313"`
Dec 12 07:27:18.156 INFO [stderr] usermod: no changes
Dec 12 07:27:18.236 INFO [stderr]     Checking skylane v0.1.2 (/source)
Dec 12 07:27:19.521 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:19.521 INFO [stderr]    --> src/connection.rs:201:22
Dec 12 07:27:19.521 INFO [stderr]     |
Dec 12 07:27:19.521 INFO [stderr] 201 |                      mut bytes_buf: &mut Cursor<&[u8]>,
Dec 12 07:27:19.521 INFO [stderr]     |                      ----^^^^^^^^^
Dec 12 07:27:19.521 INFO [stderr]     |                      |
Dec 12 07:27:19.521 INFO [stderr]     |                      help: remove this `mut`
Dec 12 07:27:19.521 INFO [stderr]     |
Dec 12 07:27:19.521 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 07:27:19.521 INFO [stderr] 
Dec 12 07:27:19.521 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:19.521 INFO [stderr]    --> src/connection.rs:202:22
Dec 12 07:27:19.521 INFO [stderr]     |
Dec 12 07:27:19.521 INFO [stderr] 202 |                      mut fds_buf: &mut Cursor<&[u8]>)
Dec 12 07:27:19.521 INFO [stderr]     |                      ----^^^^^^^
Dec 12 07:27:19.521 INFO [stderr]     |                      |
Dec 12 07:27:19.521 INFO [stderr]     |                      help: remove this `mut`
Dec 12 07:27:19.521 INFO [stderr] 
Dec 12 07:27:19.940 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:19.940 INFO [stderr]    --> src/connection.rs:201:22
Dec 12 07:27:19.940 INFO [stderr]     |
Dec 12 07:27:19.940 INFO [stderr] 201 |                      mut bytes_buf: &mut Cursor<&[u8]>,
Dec 12 07:27:19.940 INFO [stderr]     |                      ----^^^^^^^^^
Dec 12 07:27:19.940 INFO [stderr]     |                      |
Dec 12 07:27:19.940 INFO [stderr]     |                      help: remove this `mut`
Dec 12 07:27:19.940 INFO [stderr]     |
Dec 12 07:27:19.940 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 07:27:19.940 INFO [stderr] 
Dec 12 07:27:19.940 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:19.940 INFO [stderr]    --> src/connection.rs:202:22
Dec 12 07:27:19.940 INFO [stderr]     |
Dec 12 07:27:19.940 INFO [stderr] 202 |                      mut fds_buf: &mut Cursor<&[u8]>)
Dec 12 07:27:19.940 INFO [stderr]     |                      ----^^^^^^^
Dec 12 07:27:19.940 INFO [stderr]     |                      |
Dec 12 07:27:19.940 INFO [stderr]     |                      help: remove this `mut`
Dec 12 07:27:19.940 INFO [stderr] 
Dec 12 07:27:19.988 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
Dec 12 07:27:19.996 INFO [stderr] su: No module specific data is present
Dec 12 07:27:20.993 INFO running `"docker" "inspect" "c752c85762eacfe8ed3365444b67323271efc374d32a39a8b81827a0d26bd313"`
Dec 12 07:27:21.272 INFO running `"docker" "rm" "-f" "c752c85762eacfe8ed3365444b67323271efc374d32a39a8b81827a0d26bd313"`
Dec 12 07:27:21.563 INFO [stdout] c752c85762eacfe8ed3365444b67323271efc374d32a39a8b81827a0d26bd313