[INFO] cloning repository team-rust/mailbox
[INFO] running `"git" "clone" "--bare" "git://github.com/team-rust/mailbox.git" "work/cache/sources/gh/team-rust/mailbox"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/team-rust/mailbox'...
[INFO] running `"git" "clone" "work/cache/sources/gh/team-rust/mailbox" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/team-rust/mailbox"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/team-rust/mailbox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/team-rust/mailbox" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/team-rust/mailbox"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/team-rust/mailbox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1080ebc5bb1e9af9033169e806b52b05718376b7
[INFO] sha for GitHub repo team-rust/mailbox: 1080ebc5bb1e9af9033169e806b52b05718376b7
[INFO] validating manifest of team-rust/mailbox on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of team-rust/mailbox on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing team-rust/mailbox
[INFO] finished frobbing team-rust/mailbox
[INFO] frobbed toml for team-rust/mailbox written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/team-rust/mailbox/Cargo.toml
[INFO] started frobbing team-rust/mailbox
[INFO] finished frobbing team-rust/mailbox
[INFO] frobbed toml for team-rust/mailbox written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/team-rust/mailbox/Cargo.toml
[INFO] crate team-rust/mailbox already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing team-rust/mailbox against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 4c8b9bc9dde0d01fde1889d5d9245b3e40cd994b8d96289578b3979cb9ab6c1f
[INFO] running `"docker" "start" "-a" "4c8b9bc9dde0d01fde1889d5d9245b3e40cd994b8d96289578b3979cb9ab6c1f"`
[INFO] [stderr]    Compiling mailbox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/mailbox.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(sender: String, receiver: String, body: String) -> Message {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/mailbox.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn new() -> Mailbox {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `store`
[INFO] [stderr]   --> src/mailbox.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn store(&mut self, m: Message) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `fetch`
[INFO] [stderr]   --> src/mailbox.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn fetch(&mut self) -> Option<Message> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SyncedMailbox`
[INFO] [stderr]  --> src/syncedmailbox.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct SyncedMailbox {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/syncedmailbox.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn new() -> SyncedMailbox {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `store`
[INFO] [stderr]   --> src/syncedmailbox.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn store(&self, m: mailbox::Message) -> Result<(), String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `fetch`
[INFO] [stderr]   --> src/syncedmailbox.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn fetch(&self) -> Result<mailbox::Message, String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "4c8b9bc9dde0d01fde1889d5d9245b3e40cd994b8d96289578b3979cb9ab6c1f"`
[INFO] running `"docker" "rm" "-f" "4c8b9bc9dde0d01fde1889d5d9245b3e40cd994b8d96289578b3979cb9ab6c1f"`
[INFO] [stdout] 4c8b9bc9dde0d01fde1889d5d9245b3e40cd994b8d96289578b3979cb9ab6c1f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4a2caf9f004a8c978d12b06ab36927651834afbc15b4baaa0b2d3f826fbc61a8
[INFO] running `"docker" "start" "-a" "4a2caf9f004a8c978d12b06ab36927651834afbc15b4baaa0b2d3f826fbc61a8"`
[INFO] [stderr]    Compiling mailbox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "4a2caf9f004a8c978d12b06ab36927651834afbc15b4baaa0b2d3f826fbc61a8"`
[INFO] running `"docker" "rm" "-f" "4a2caf9f004a8c978d12b06ab36927651834afbc15b4baaa0b2d3f826fbc61a8"`
[INFO] [stdout] 4a2caf9f004a8c978d12b06ab36927651834afbc15b4baaa0b2d3f826fbc61a8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] 010c656870039ac33a3dcc63ebc5a9553ccfa0a58d2b13b103adca4ecfeaba96
[INFO] running `"docker" "start" "-a" "010c656870039ac33a3dcc63ebc5a9553ccfa0a58d2b13b103adca4ecfeaba96"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mailbox-85cf2afe5d965d05
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test mailbox::tests::test_store ... ok
[INFO] [stdout] test mailbox::tests::test_fetch ... ok
[INFO] [stdout] test syncedmailbox::tests::test_fetch ... ok
[INFO] [stdout] test syncedmailbox::tests::test_store ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "010c656870039ac33a3dcc63ebc5a9553ccfa0a58d2b13b103adca4ecfeaba96"`
[INFO] running `"docker" "rm" "-f" "010c656870039ac33a3dcc63ebc5a9553ccfa0a58d2b13b103adca4ecfeaba96"`
[INFO] [stdout] 010c656870039ac33a3dcc63ebc5a9553ccfa0a58d2b13b103adca4ecfeaba96