Nov 27 16:37:42.625 INFO checking yberreby/benchmarks against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 27 16:37:42.627 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 27 16:37:43.089 INFO [stdout] d7b882390d78f655ff08b575affaf62ea730f1b84aefeb86430096c2a8bda92f
Nov 27 16:37:43.090 INFO running `"docker" "start" "-a" "d7b882390d78f655ff08b575affaf62ea730f1b84aefeb86430096c2a8bda92f"`
Nov 27 16:37:44.429 INFO [stderr] usermod: no changes
Nov 27 16:37:44.524 INFO [stderr]     Checking libc v0.2.8
Nov 27 16:37:44.524 INFO [stderr]     Checking crossbeam v0.2.10
Nov 27 16:37:45.744 INFO [stderr]     Checking rand v0.3.14
Nov 27 16:37:47.100 INFO [stderr]     Checking chan v0.1.18
Nov 27 16:37:47.738 INFO [stderr]     Checking benchmarks v0.1.0 (/source)
Nov 27 16:37:48.316 INFO [stderr] error[E0433]: failed to resolve: could not find `heap` in `alloc`
Nov 27 16:37:48.316 INFO [stderr]   --> benches/alloc.rs:11:14
Nov 27 16:37:48.316 INFO [stderr]    |
Nov 27 16:37:48.316 INFO [stderr] 11 |       alloc::heap::allocate(4, 64)
Nov 27 16:37:48.316 INFO [stderr]    |              ^^^^ could not find `heap` in `alloc`
Nov 27 16:37:48.316 INFO [stderr] 
Nov 27 16:37:48.384 INFO [stderr] error: aborting due to previous error
Nov 27 16:37:48.432 INFO [stderr] 
Nov 27 16:37:48.432 INFO [stderr] For more information about this error, try `rustc --explain E0433`.
Nov 27 16:37:48.481 INFO [stderr] error: Could not compile `benchmarks`.
Nov 27 16:37:48.481 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 27 16:37:48.568 INFO [stderr] error[E0635]: unknown feature `str_char`
Nov 27 16:37:48.569 INFO [stderr]  --> benches/char_at.rs:2:12
Nov 27 16:37:48.569 INFO [stderr]   |
Nov 27 16:37:48.569 INFO [stderr] 2 | #![feature(str_char)]
Nov 27 16:37:48.569 INFO [stderr]   |            ^^^^^^^^
Nov 27 16:37:48.569 INFO [stderr] 
Nov 27 16:37:48.596 INFO [stderr] error: aborting due to previous error
Nov 27 16:37:48.597 INFO [stderr] 
Nov 27 16:37:48.597 INFO [stderr] For more information about this error, try `rustc --explain E0635`.
Nov 27 16:37:48.623 INFO [stderr] warning: unused variable: `stdout`
Nov 27 16:37:48.624 INFO [stderr]   --> benches/stdio.rs:24:9
Nov 27 16:37:48.625 INFO [stderr]    |
Nov 27 16:37:48.625 INFO [stderr] 24 |     let stdout = stdout.lock();
Nov 27 16:37:48.626 INFO [stderr]    |         ^^^^^^ help: consider using `_stdout` instead
Nov 27 16:37:48.633 INFO [stderr] error: Could not compile `benchmarks`.
Nov 27 16:37:48.633 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 27 16:37:48.654 INFO [stderr]    |
Nov 27 16:37:48.654 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 16:37:48.654 INFO [stderr] 
Nov 27 16:37:48.664 INFO [stderr] warning: variable does not need to be mutable
Nov 27 16:37:48.664 INFO [stderr]   --> benches/stdio.rs:23:9
Nov 27 16:37:48.664 INFO [stderr]    |
Nov 27 16:37:48.664 INFO [stderr] 23 |     let mut stdout = std::io::stdout();
Nov 27 16:37:48.664 INFO [stderr]    |         ----^^^^^^
Nov 27 16:37:48.664 INFO [stderr]    |         |
Nov 27 16:37:48.664 INFO [stderr]    |         help: remove this `mut`
Nov 27 16:37:48.674 INFO [stderr]    |
Nov 27 16:37:48.676 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 27 16:37:48.676 INFO [stderr] 
Nov 27 16:37:48.684 INFO [stderr] warning: variable does not need to be mutable
Nov 27 16:37:48.684 INFO [stderr]   --> benches/stdio.rs:43:9
Nov 27 16:37:48.684 INFO [stderr]    |
Nov 27 16:37:48.684 INFO [stderr] 43 |     let mut stdout = io::stdout();
Nov 27 16:37:48.684 INFO [stderr]    |         ----^^^^^^
Nov 27 16:37:48.684 INFO [stderr]    |         |
Nov 27 16:37:48.684 INFO [stderr]    |         help: remove this `mut`
Nov 27 16:37:48.686 INFO [stderr] warning: unused variable: `i`
Nov 27 16:37:48.686 INFO [stderr]   --> benches/bnned.rs:14:13
Nov 27 16:37:48.686 INFO [stderr]    |
Nov 27 16:37:48.686 INFO [stderr] 14 |         for i in 0..1_000_000 {
Nov 27 16:37:48.686 INFO [stderr]    |             ^ help: consider using `_i` instead
Nov 27 16:37:48.686 INFO [stderr]    |
Nov 27 16:37:48.686 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 16:37:48.686 INFO [stderr] 
Nov 27 16:37:48.704 INFO [stderr] error[E0635]: unknown feature `str_char`
Nov 27 16:37:48.704 INFO [stderr]  --> benches/bnned.rs:2:12
Nov 27 16:37:48.704 INFO [stderr]   |
Nov 27 16:37:48.704 INFO [stderr] 2 | #![feature(str_char)]
Nov 27 16:37:48.704 INFO [stderr]   |            ^^^^^^^^
Nov 27 16:37:48.704 INFO [stderr] 
Nov 27 16:37:48.720 INFO [stderr] 
Nov 27 16:37:48.720 INFO [stderr] error[E0635]: unknown feature `str_char`
Nov 27 16:37:48.720 INFO [stderr]  --> benches/stdio.rs:4:12
Nov 27 16:37:48.720 INFO [stderr]   |
Nov 27 16:37:48.720 INFO [stderr] 4 | #![feature(str_char)]
Nov 27 16:37:48.721 INFO [stderr]   |            ^^^^^^^^
Nov 27 16:37:48.721 INFO [stderr] 
Nov 27 16:37:48.724 INFO [stderr] error: aborting due to previous error
Nov 27 16:37:48.724 INFO [stderr] 
Nov 27 16:37:48.724 INFO [stderr] For more information about this error, try `rustc --explain E0635`.
Nov 27 16:37:48.768 INFO [stderr] error: Could not compile `benchmarks`.
Nov 27 16:37:48.768 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 27 16:37:48.784 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 16:37:48.784 INFO [stderr]   --> benches/stdio.rs:35:9
Nov 27 16:37:48.784 INFO [stderr]    |
Nov 27 16:37:48.784 INFO [stderr] 35 |         stdout.write(TEST_STR.as_bytes());
Nov 27 16:37:48.784 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 16:37:48.804 INFO [stderr]    |
Nov 27 16:37:48.804 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 27 16:37:48.804 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 16:37:48.805 INFO [stderr] 
Nov 27 16:37:48.806 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 16:37:48.806 INFO [stderr]   --> benches/stdio.rs:46:9
Nov 27 16:37:48.807 INFO [stderr]    |
Nov 27 16:37:48.807 INFO [stderr] 46 |         stdout.write(TEST_STR.as_bytes());
Nov 27 16:37:48.807 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 16:37:48.808 INFO [stderr]    |
Nov 27 16:37:48.808 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 16:37:48.808 INFO [stderr] 
Nov 27 16:37:48.816 INFO [stderr] error: aborting due to previous error
Nov 27 16:37:48.817 INFO [stderr] 
Nov 27 16:37:48.817 INFO [stderr] For more information about this error, try `rustc --explain E0635`.
Nov 27 16:37:48.844 INFO [stderr] error: Could not compile `benchmarks`.
Nov 27 16:37:48.845 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 27 16:37:48.908 INFO [stderr] error: build failed
Nov 27 16:37:48.910 INFO [stderr] su: No module specific data is present
Nov 27 16:37:50.416 INFO running `"docker" "inspect" "d7b882390d78f655ff08b575affaf62ea730f1b84aefeb86430096c2a8bda92f"`
Nov 27 16:37:50.732 INFO running `"docker" "rm" "-f" "d7b882390d78f655ff08b575affaf62ea730f1b84aefeb86430096c2a8bda92f"`
Nov 27 16:37:51.092 INFO [stdout] d7b882390d78f655ff08b575affaf62ea730f1b84aefeb86430096c2a8bda92f