Dec 19 07:27:26.985 INFO checking team-rust/mailbox against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 07:27:26.985 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/team-rust/mailbox:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 07:27:27.460 INFO [stdout] 44a1934db4a7602d5469879b491ff8c9cb12ecae0ab701cd6262dbefe4f7a432
Dec 19 07:27:27.462 INFO running `"docker" "start" "-a" "44a1934db4a7602d5469879b491ff8c9cb12ecae0ab701cd6262dbefe4f7a432"`
Dec 19 07:27:29.536 INFO [stderr]     Checking mailbox v0.1.0 (/opt/crater/workdir)
Dec 19 07:27:29.936 INFO [stderr] warning: method is never used: `new`
Dec 19 07:27:29.936 INFO [stderr]  --> src/mailbox.rs:9:5
Dec 19 07:27:29.936 INFO [stderr]   |
Dec 19 07:27:29.936 INFO [stderr] 9 |     pub fn new(sender: String, receiver: String, body: String) -> Message {
Dec 19 07:27:29.936 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:27:29.936 INFO [stderr]   |
Dec 19 07:27:29.936 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 07:27:29.936 INFO [stderr] 
Dec 19 07:27:29.936 INFO [stderr] warning: method is never used: `new`
Dec 19 07:27:29.936 INFO [stderr]   --> src/mailbox.rs:20:5
Dec 19 07:27:29.936 INFO [stderr]    |
Dec 19 07:27:29.937 INFO [stderr] 20 |     pub fn new() -> Mailbox {
Dec 19 07:27:29.937 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:27:29.937 INFO [stderr] 
Dec 19 07:27:29.937 INFO [stderr] warning: method is never used: `store`
Dec 19 07:27:29.937 INFO [stderr]   --> src/mailbox.rs:24:5
Dec 19 07:27:29.937 INFO [stderr]    |
Dec 19 07:27:29.937 INFO [stderr] 24 |     pub fn store(&mut self, m: Message) {
Dec 19 07:27:29.937 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:27:29.937 INFO [stderr] 
Dec 19 07:27:29.937 INFO [stderr] warning: method is never used: `fetch`
Dec 19 07:27:29.937 INFO [stderr]   --> src/mailbox.rs:28:5
Dec 19 07:27:29.937 INFO [stderr]    |
Dec 19 07:27:29.937 INFO [stderr] 28 |     pub fn fetch(&mut self) -> Option<Message> {
Dec 19 07:27:29.937 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:27:29.937 INFO [stderr] 
Dec 19 07:27:29.937 INFO [stderr] warning: struct is never constructed: `SyncedMailbox`
Dec 19 07:27:29.937 INFO [stderr]  --> src/syncedmailbox.rs:4:1
Dec 19 07:27:29.937 INFO [stderr]   |
Dec 19 07:27:29.937 INFO [stderr] 4 | struct SyncedMailbox {
Dec 19 07:27:29.937 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 19 07:27:29.937 INFO [stderr] 
Dec 19 07:27:29.937 INFO [stderr] warning: method is never used: `new`
Dec 19 07:27:29.937 INFO [stderr]  --> src/syncedmailbox.rs:9:5
Dec 19 07:27:29.937 INFO [stderr]   |
Dec 19 07:27:29.937 INFO [stderr] 9 |     fn new() -> SyncedMailbox {
Dec 19 07:27:29.937 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:27:29.937 INFO [stderr] 
Dec 19 07:27:29.937 INFO [stderr] warning: method is never used: `store`
Dec 19 07:27:29.937 INFO [stderr]   --> src/syncedmailbox.rs:14:5
Dec 19 07:27:29.937 INFO [stderr]    |
Dec 19 07:27:29.937 INFO [stderr] 14 |     fn store(&self, m: mailbox::Message) -> Result<(), String> {
Dec 19 07:27:29.937 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:27:29.937 INFO [stderr] 
Dec 19 07:27:29.937 INFO [stderr] warning: method is never used: `fetch`
Dec 19 07:27:29.937 INFO [stderr]   --> src/syncedmailbox.rs:21:5
Dec 19 07:27:29.937 INFO [stderr]    |
Dec 19 07:27:29.937 INFO [stderr] 21 |     fn fetch(&self) -> Result<mailbox::Message, String> {
Dec 19 07:27:29.937 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:27:29.937 INFO [stderr] 
Dec 19 07:27:29.968 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Dec 19 07:27:31.067 INFO running `"docker" "inspect" "44a1934db4a7602d5469879b491ff8c9cb12ecae0ab701cd6262dbefe4f7a432"`
Dec 19 07:27:31.394 INFO running `"docker" "rm" "-f" "44a1934db4a7602d5469879b491ff8c9cb12ecae0ab701cd6262dbefe4f7a432"`
Dec 19 07:27:31.756 INFO [stdout] 44a1934db4a7602d5469879b491ff8c9cb12ecae0ab701cd6262dbefe4f7a432