Dec 04 08:53:34.749 INFO checking team-rust/mailbox against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 08:53:34.749 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 08:53:35.146 INFO [stdout] b833a07a1cb785037356257cf1dac83a07a70be9a2fd8d61540a330afa5b703d
Dec 04 08:53:35.149 INFO running `"docker" "start" "-a" "b833a07a1cb785037356257cf1dac83a07a70be9a2fd8d61540a330afa5b703d"`
Dec 04 08:53:36.625 INFO [stderr] usermod: no changes
Dec 04 08:53:36.683 INFO [stderr]     Checking mailbox v0.1.0 (/source)
Dec 04 08:53:37.219 INFO [stderr] warning: method is never used: `new`
Dec 04 08:53:37.219 INFO [stderr]  --> src/mailbox.rs:9:5
Dec 04 08:53:37.219 INFO [stderr]   |
Dec 04 08:53:37.219 INFO [stderr] 9 |     pub fn new(sender: String, receiver: String, body: String) -> Message {
Dec 04 08:53:37.219 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:53:37.219 INFO [stderr]   |
Dec 04 08:53:37.219 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 08:53:37.219 INFO [stderr] 
Dec 04 08:53:37.219 INFO [stderr] warning: method is never used: `new`
Dec 04 08:53:37.219 INFO [stderr]   --> src/mailbox.rs:20:5
Dec 04 08:53:37.219 INFO [stderr]    |
Dec 04 08:53:37.219 INFO [stderr] 20 |     pub fn new() -> Mailbox {
Dec 04 08:53:37.219 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:53:37.219 INFO [stderr] 
Dec 04 08:53:37.219 INFO [stderr] warning: method is never used: `store`
Dec 04 08:53:37.219 INFO [stderr]   --> src/mailbox.rs:24:5
Dec 04 08:53:37.219 INFO [stderr]    |
Dec 04 08:53:37.219 INFO [stderr] 24 |     pub fn store(&mut self, m: Message) {
Dec 04 08:53:37.219 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:53:37.219 INFO [stderr] 
Dec 04 08:53:37.219 INFO [stderr] warning: method is never used: `fetch`
Dec 04 08:53:37.219 INFO [stderr]   --> src/mailbox.rs:28:5
Dec 04 08:53:37.219 INFO [stderr]    |
Dec 04 08:53:37.220 INFO [stderr] 28 |     pub fn fetch(&mut self) -> Option<Message> {
Dec 04 08:53:37.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:53:37.220 INFO [stderr] 
Dec 04 08:53:37.220 INFO [stderr] warning: struct is never constructed: `SyncedMailbox`
Dec 04 08:53:37.220 INFO [stderr]  --> src/syncedmailbox.rs:4:1
Dec 04 08:53:37.220 INFO [stderr]   |
Dec 04 08:53:37.220 INFO [stderr] 4 | struct SyncedMailbox {
Dec 04 08:53:37.220 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 04 08:53:37.220 INFO [stderr] 
Dec 04 08:53:37.220 INFO [stderr] warning: method is never used: `new`
Dec 04 08:53:37.220 INFO [stderr]  --> src/syncedmailbox.rs:9:5
Dec 04 08:53:37.220 INFO [stderr]   |
Dec 04 08:53:37.220 INFO [stderr] 9 |     fn new() -> SyncedMailbox {
Dec 04 08:53:37.220 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:53:37.220 INFO [stderr] 
Dec 04 08:53:37.220 INFO [stderr] warning: method is never used: `store`
Dec 04 08:53:37.220 INFO [stderr]   --> src/syncedmailbox.rs:14:5
Dec 04 08:53:37.220 INFO [stderr]    |
Dec 04 08:53:37.220 INFO [stderr] 14 |     fn store(&self, m: mailbox::Message) -> Result<(), String> {
Dec 04 08:53:37.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:53:37.220 INFO [stderr] 
Dec 04 08:53:37.220 INFO [stderr] warning: method is never used: `fetch`
Dec 04 08:53:37.220 INFO [stderr]   --> src/syncedmailbox.rs:21:5
Dec 04 08:53:37.220 INFO [stderr]    |
Dec 04 08:53:37.220 INFO [stderr] 21 |     fn fetch(&self) -> Result<mailbox::Message, String> {
Dec 04 08:53:37.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:53:37.220 INFO [stderr] 
Dec 04 08:53:37.255 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Dec 04 08:53:37.255 INFO [stderr] su: No module specific data is present
Dec 04 08:53:37.989 INFO running `"docker" "inspect" "b833a07a1cb785037356257cf1dac83a07a70be9a2fd8d61540a330afa5b703d"`
Dec 04 08:53:38.298 INFO running `"docker" "rm" "-f" "b833a07a1cb785037356257cf1dac83a07a70be9a2fd8d61540a330afa5b703d"`
Dec 04 08:53:38.587 INFO [stdout] b833a07a1cb785037356257cf1dac83a07a70be9a2fd8d61540a330afa5b703d