Dec 01 02:24:26.377 INFO checking acid-state-0.2.3 against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Dec 01 02:24:26.377 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 01 02:24:26.772 INFO [stdout] c2fd48bc9eb6d80462f420452e4923d3051837a3734c044805add89aecbda8f3
Dec 01 02:24:26.778 INFO running `"docker" "start" "-a" "c2fd48bc9eb6d80462f420452e4923d3051837a3734c044805add89aecbda8f3"`
Dec 01 02:24:27.468 INFO [stderr] usermod: no changes
Dec 01 02:24:27.530 INFO [stderr]     Checking bincode v0.5.9
Dec 01 02:24:29.017 INFO [stderr]     Checking acid-state v0.2.3 (/source)
Dec 01 02:24:30.033 INFO [stderr] warning: unused `#[macro_use]` import
Dec 01 02:24:30.033 INFO [stderr]   --> src/lib.rs:49:1
Dec 01 02:24:30.033 INFO [stderr]    |
Dec 01 02:24:30.033 INFO [stderr] 49 | #[macro_use]
Dec 01 02:24:30.033 INFO [stderr]    | ^^^^^^^^^^^^
Dec 01 02:24:30.033 INFO [stderr]    |
Dec 01 02:24:30.033 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 01 02:24:30.033 INFO [stderr] 
Dec 01 02:24:30.152 INFO [stderr] warning: method is never used: `clear`
Dec 01 02:24:30.152 INFO [stderr]   --> src/wrapper_structs.rs:54:5
Dec 01 02:24:30.152 INFO [stderr]    |
Dec 01 02:24:30.152 INFO [stderr] 54 |     fn clear(&self) -> io::Result<()> {
Dec 01 02:24:30.152 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:30.152 INFO [stderr]    |
Dec 01 02:24:30.152 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 01 02:24:30.152 INFO [stderr] 
Dec 01 02:24:30.169 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 01 02:24:30.169 INFO [stderr]   --> src/wrapper_structs.rs:70:9
Dec 01 02:24:30.169 INFO [stderr]    |
Dec 01 02:24:30.169 INFO [stderr] 70 |         f.sync_all();
Dec 01 02:24:30.169 INFO [stderr]    |         ^^^^^^^^^^^^^
Dec 01 02:24:30.169 INFO [stderr]    |
Dec 01 02:24:30.169 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 01 02:24:30.169 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 02:24:30.169 INFO [stderr] 
Dec 01 02:24:30.169 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 01 02:24:30.169 INFO [stderr]   --> src/wrapper_structs.rs:88:9
Dec 01 02:24:30.169 INFO [stderr]    |
Dec 01 02:24:30.169 INFO [stderr] 88 |         self.write();
Dec 01 02:24:30.169 INFO [stderr]    |         ^^^^^^^^^^^^^
Dec 01 02:24:30.169 INFO [stderr]    |
Dec 01 02:24:30.169 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 02:24:30.169 INFO [stderr] 
Dec 01 02:24:30.268 INFO [stderr] warning: unused `#[macro_use]` import
Dec 01 02:24:30.268 INFO [stderr]   --> src/lib.rs:49:1
Dec 01 02:24:30.268 INFO [stderr]    |
Dec 01 02:24:30.268 INFO [stderr] 49 | #[macro_use]
Dec 01 02:24:30.268 INFO [stderr]    | ^^^^^^^^^^^^
Dec 01 02:24:30.268 INFO [stderr]    |
Dec 01 02:24:30.268 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 01 02:24:30.268 INFO [stderr] 
Dec 01 02:24:30.384 INFO [stderr] warning: method is never used: `clear`
Dec 01 02:24:30.384 INFO [stderr]   --> src/wrapper_structs.rs:54:5
Dec 01 02:24:30.384 INFO [stderr]    |
Dec 01 02:24:30.384 INFO [stderr] 54 |     fn clear(&self) -> io::Result<()> {
Dec 01 02:24:30.384 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 02:24:30.384 INFO [stderr]    |
Dec 01 02:24:30.384 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 01 02:24:30.384 INFO [stderr] 
Dec 01 02:24:30.400 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 01 02:24:30.400 INFO [stderr]   --> src/wrapper_structs.rs:70:9
Dec 01 02:24:30.400 INFO [stderr]    |
Dec 01 02:24:30.400 INFO [stderr] 70 |         f.sync_all();
Dec 01 02:24:30.400 INFO [stderr]    |         ^^^^^^^^^^^^^
Dec 01 02:24:30.400 INFO [stderr]    |
Dec 01 02:24:30.400 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 01 02:24:30.400 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 02:24:30.400 INFO [stderr] 
Dec 01 02:24:30.400 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 01 02:24:30.400 INFO [stderr]   --> src/wrapper_structs.rs:88:9
Dec 01 02:24:30.400 INFO [stderr]    |
Dec 01 02:24:30.400 INFO [stderr] 88 |         self.write();
Dec 01 02:24:30.400 INFO [stderr]    |         ^^^^^^^^^^^^^
Dec 01 02:24:30.400 INFO [stderr]    |
Dec 01 02:24:30.400 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 01 02:24:30.400 INFO [stderr] 
Dec 01 02:24:31.492 INFO [stderr] warning: variable does not need to be mutable
Dec 01 02:24:31.492 INFO [stderr]   --> test/test.rs:28:17
Dec 01 02:24:31.492 INFO [stderr]    |
Dec 01 02:24:31.492 INFO [stderr] 28 |             let mut current = a.entry(key).or_insert(0);
Dec 01 02:24:31.492 INFO [stderr]    |                 ----^^^^^^^
Dec 01 02:24:31.492 INFO [stderr]    |                 |
Dec 01 02:24:31.492 INFO [stderr]    |                 help: remove this `mut`
Dec 01 02:24:31.492 INFO [stderr]    |
Dec 01 02:24:31.492 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 01 02:24:31.492 INFO [stderr] 
Dec 01 02:24:31.574 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.07s
Dec 01 02:24:31.574 INFO [stderr] su: No module specific data is present
Dec 01 02:24:32.050 INFO running `"docker" "inspect" "c2fd48bc9eb6d80462f420452e4923d3051837a3734c044805add89aecbda8f3"`
Dec 01 02:24:32.178 INFO running `"docker" "rm" "-f" "c2fd48bc9eb6d80462f420452e4923d3051837a3734c044805add89aecbda8f3"`
Dec 01 02:24:32.307 INFO [stdout] c2fd48bc9eb6d80462f420452e4923d3051837a3734c044805add89aecbda8f3