Nov 18 21:14:41.307 INFO testing acid-state-0.2.3 against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 18 21:14:41.308 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 18 21:14:41.517 INFO [stdout] 087e7d133d6a0ee3dac4aa8d83a3d5c16fcd5626d570080afd6196bb6d3c8178
Nov 18 21:14:41.519 INFO running `"docker" "start" "-a" "087e7d133d6a0ee3dac4aa8d83a3d5c16fcd5626d570080afd6196bb6d3c8178"`
Nov 18 21:14:42.591 INFO [stderr] usermod: no changes
Nov 18 21:14:42.667 INFO [stderr]    Compiling acid-state v0.2.3 (/source)
Nov 18 21:14:43.351 INFO [stderr] warning: unused `#[macro_use]` import
Nov 18 21:14:43.351 INFO [stderr]   --> src/lib.rs:49:1
Nov 18 21:14:43.352 INFO [stderr]    |
Nov 18 21:14:43.352 INFO [stderr] 49 | #[macro_use]
Nov 18 21:14:43.352 INFO [stderr]    | ^^^^^^^^^^^^
Nov 18 21:14:43.352 INFO [stderr]    |
Nov 18 21:14:43.352 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 18 21:14:43.352 INFO [stderr] 
Nov 18 21:14:43.419 INFO [stderr] warning: method is never used: `clear`
Nov 18 21:14:43.419 INFO [stderr]   --> src/wrapper_structs.rs:54:5
Nov 18 21:14:43.419 INFO [stderr]    |
Nov 18 21:14:43.419 INFO [stderr] 54 |     fn clear(&self) -> io::Result<()> {
Nov 18 21:14:43.419 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 21:14:43.419 INFO [stderr]    |
Nov 18 21:14:43.419 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 18 21:14:43.419 INFO [stderr] 
Nov 18 21:14:43.426 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 21:14:43.426 INFO [stderr]   --> src/wrapper_structs.rs:70:9
Nov 18 21:14:43.426 INFO [stderr]    |
Nov 18 21:14:43.427 INFO [stderr] 70 |         f.sync_all();
Nov 18 21:14:43.427 INFO [stderr]    |         ^^^^^^^^^^^^^
Nov 18 21:14:43.428 INFO [stderr]    |
Nov 18 21:14:43.428 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 18 21:14:43.428 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 21:14:43.429 INFO [stderr] 
Nov 18 21:14:43.429 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 21:14:43.429 INFO [stderr]   --> src/wrapper_structs.rs:88:9
Nov 18 21:14:43.430 INFO [stderr]    |
Nov 18 21:14:43.430 INFO [stderr] 88 |         self.write();
Nov 18 21:14:43.430 INFO [stderr]    |         ^^^^^^^^^^^^^
Nov 18 21:14:43.431 INFO [stderr]    |
Nov 18 21:14:43.431 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 21:14:43.431 INFO [stderr] 
Nov 18 21:14:43.453 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
Nov 18 21:14:43.453 INFO [stderr] su: No module specific data is present
Nov 18 21:14:43.787 INFO running `"docker" "inspect" "087e7d133d6a0ee3dac4aa8d83a3d5c16fcd5626d570080afd6196bb6d3c8178"`
Nov 18 21:14:43.901 INFO running `"docker" "rm" "-f" "087e7d133d6a0ee3dac4aa8d83a3d5c16fcd5626d570080afd6196bb6d3c8178"`
Nov 18 21:14:44.008 INFO [stdout] 087e7d133d6a0ee3dac4aa8d83a3d5c16fcd5626d570080afd6196bb6d3c8178
Nov 18 21:14:44.011 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 18 21:14:44.174 INFO [stdout] 1d78085163e508f8f92a6b5fc18eca9175f719e5c44d5a9406ab3a1abfb084bb
Nov 18 21:14:44.176 INFO running `"docker" "start" "-a" "1d78085163e508f8f92a6b5fc18eca9175f719e5c44d5a9406ab3a1abfb084bb"`
Nov 18 21:14:44.744 INFO [stderr] usermod: no changes
Nov 18 21:14:44.812 INFO [stderr]    Compiling acid-state v0.2.3 (/source)
Nov 18 21:14:45.550 INFO [stderr] warning: unused `#[macro_use]` import
Nov 18 21:14:45.550 INFO [stderr]   --> src/lib.rs:49:1
Nov 18 21:14:45.550 INFO [stderr]    |
Nov 18 21:14:45.550 INFO [stderr] 49 | #[macro_use]
Nov 18 21:14:45.550 INFO [stderr]    | ^^^^^^^^^^^^
Nov 18 21:14:45.550 INFO [stderr]    |
Nov 18 21:14:45.550 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 18 21:14:45.550 INFO [stderr] 
Nov 18 21:14:45.602 INFO [stderr] warning: method is never used: `clear`
Nov 18 21:14:45.602 INFO [stderr]   --> src/wrapper_structs.rs:54:5
Nov 18 21:14:45.603 INFO [stderr]    |
Nov 18 21:14:45.603 INFO [stderr] 54 |     fn clear(&self) -> io::Result<()> {
Nov 18 21:14:45.603 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 21:14:45.603 INFO [stderr]    |
Nov 18 21:14:45.603 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 18 21:14:45.603 INFO [stderr] 
Nov 18 21:14:45.610 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 21:14:45.610 INFO [stderr]   --> src/wrapper_structs.rs:70:9
Nov 18 21:14:45.610 INFO [stderr]    |
Nov 18 21:14:45.610 INFO [stderr] 70 |         f.sync_all();
Nov 18 21:14:45.610 INFO [stderr]    |         ^^^^^^^^^^^^^
Nov 18 21:14:45.610 INFO [stderr]    |
Nov 18 21:14:45.610 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 18 21:14:45.610 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 21:14:45.610 INFO [stderr] 
Nov 18 21:14:45.610 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 21:14:45.610 INFO [stderr]   --> src/wrapper_structs.rs:88:9
Nov 18 21:14:45.610 INFO [stderr]    |
Nov 18 21:14:45.610 INFO [stderr] 88 |         self.write();
Nov 18 21:14:45.610 INFO [stderr]    |         ^^^^^^^^^^^^^
Nov 18 21:14:45.610 INFO [stderr]    |
Nov 18 21:14:45.610 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 21:14:45.610 INFO [stderr] 
Nov 18 21:14:45.778 INFO [stderr] warning: variable does not need to be mutable
Nov 18 21:14:45.778 INFO [stderr]   --> test/test.rs:28:17
Nov 18 21:14:45.778 INFO [stderr]    |
Nov 18 21:14:45.778 INFO [stderr] 28 |             let mut current = a.entry(key).or_insert(0);
Nov 18 21:14:45.778 INFO [stderr]    |                 ----^^^^^^^
Nov 18 21:14:45.778 INFO [stderr]    |                 |
Nov 18 21:14:45.778 INFO [stderr]    |                 help: remove this `mut`
Nov 18 21:14:45.778 INFO [stderr]    |
Nov 18 21:14:45.778 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 18 21:14:45.778 INFO [stderr] 
Nov 18 21:14:46.603 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
Nov 18 21:14:46.607 INFO [stderr] su: No module specific data is present
Nov 18 21:14:47.060 INFO running `"docker" "inspect" "1d78085163e508f8f92a6b5fc18eca9175f719e5c44d5a9406ab3a1abfb084bb"`
Nov 18 21:14:47.143 INFO running `"docker" "rm" "-f" "1d78085163e508f8f92a6b5fc18eca9175f719e5c44d5a9406ab3a1abfb084bb"`
Nov 18 21:14:47.217 INFO [stdout] 1d78085163e508f8f92a6b5fc18eca9175f719e5c44d5a9406ab3a1abfb084bb