Dec 02 14:54:43.494 INFO testing symspell-0.1.1 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 14:54:43.494 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 14:54:43.891 INFO [stdout] a02b0500ade0b122b0653362a1a190ed8fbd2364823191d6ba8432a07b64208a
Dec 02 14:54:43.893 INFO running `"docker" "start" "-a" "a02b0500ade0b122b0653362a1a190ed8fbd2364823191d6ba8432a07b64208a"`
Dec 02 14:54:45.466 INFO [stderr] usermod: no changes
Dec 02 14:54:45.535 INFO [stderr]    Compiling derive_builder_core v0.2.0
Dec 02 14:54:50.251 INFO [stderr]    Compiling derive_builder v0.5.1
Dec 02 14:54:55.019 INFO [stderr]    Compiling symspell v0.1.1 (/source)
Dec 02 14:54:55.537 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 14:54:55.537 INFO [stderr]   --> src/lib.rs:21:1
Dec 02 14:54:55.538 INFO [stderr]    |
Dec 02 14:54:55.538 INFO [stderr] 21 | #![feature(duration_extras)]
Dec 02 14:54:55.538 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:54:55.538 INFO [stderr] 
Dec 02 14:54:55.539 INFO [stderr] error: aborting due to previous error
Dec 02 14:54:55.539 INFO [stderr] 
Dec 02 14:54:55.539 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 14:54:55.545 INFO [stderr] error: Could not compile `symspell`.
Dec 02 14:54:55.545 INFO [stderr] 
Dec 02 14:54:55.545 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 14:54:55.547 INFO [stderr] su: No module specific data is present
Dec 02 14:54:55.893 INFO running `"docker" "inspect" "a02b0500ade0b122b0653362a1a190ed8fbd2364823191d6ba8432a07b64208a"`
Dec 02 14:54:56.037 INFO running `"docker" "rm" "-f" "a02b0500ade0b122b0653362a1a190ed8fbd2364823191d6ba8432a07b64208a"`
Dec 02 14:54:56.263 INFO [stdout] a02b0500ade0b122b0653362a1a190ed8fbd2364823191d6ba8432a07b64208a