Dec 02 12:54:08.318 INFO testing tt-num-0.1.0 against 1.30.1 for beta-1.31-5
Dec 02 12:54:08.318 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/1.30.1:/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 +1.30.1 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 12:54:08.844 INFO [stdout] 89ce5d9877ccba112b2fe56a47689473ebd68a5bfad71487d15ded48a55124f9
Dec 02 12:54:08.846 INFO running `"docker" "start" "-a" "89ce5d9877ccba112b2fe56a47689473ebd68a5bfad71487d15ded48a55124f9"`
Dec 02 12:54:10.690 INFO [stderr] usermod: no changes
Dec 02 12:54:10.735 INFO [stderr]    Compiling tt-call v1.0.4
Dec 02 12:54:11.448 INFO [stderr]    Compiling tt-num v0.1.0 (/source)
Dec 02 12:54:12.142 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
Dec 02 12:54:12.145 INFO [stderr] su: No module specific data is present
Dec 02 12:54:12.700 INFO running `"docker" "inspect" "89ce5d9877ccba112b2fe56a47689473ebd68a5bfad71487d15ded48a55124f9"`
Dec 02 12:54:12.967 INFO running `"docker" "rm" "-f" "89ce5d9877ccba112b2fe56a47689473ebd68a5bfad71487d15ded48a55124f9"`
Dec 02 12:54:13.353 INFO [stdout] 89ce5d9877ccba112b2fe56a47689473ebd68a5bfad71487d15ded48a55124f9
Dec 02 12:54:13.357 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen --no-run" "-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 12:54:13.787 INFO [stdout] 98f7fd594d2e6f0960a4f4993d678674012400468fd9090bc177fc01b7095a1a
Dec 02 12:54:13.790 INFO running `"docker" "start" "-a" "98f7fd594d2e6f0960a4f4993d678674012400468fd9090bc177fc01b7095a1a"`
Dec 02 12:54:15.243 INFO [stderr] usermod: no changes
Dec 02 12:54:15.308 INFO [stderr]    Compiling tt-num v0.1.0 (/source)
Dec 02 12:54:16.259 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 12:54:16.259 INFO [stderr]  --> examples/times.rs:1:1
Dec 02 12:54:16.259 INFO [stderr]   |
Dec 02 12:54:16.259 INFO [stderr] 1 | #![feature(use_extern_macros)]
Dec 02 12:54:16.259 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 12:54:16.259 INFO [stderr] 
Dec 02 12:54:16.259 INFO [stderr] error: aborting due to previous error
Dec 02 12:54:16.259 INFO [stderr] 
Dec 02 12:54:16.259 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 12:54:16.259 INFO [stderr] error: Could not compile `tt-num`.
Dec 02 12:54:16.259 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 12:54:16.955 INFO [stderr] error: build failed
Dec 02 12:54:16.955 INFO [stderr] su: No module specific data is present
Dec 02 12:54:17.793 INFO running `"docker" "inspect" "98f7fd594d2e6f0960a4f4993d678674012400468fd9090bc177fc01b7095a1a"`
Dec 02 12:54:18.027 INFO running `"docker" "rm" "-f" "98f7fd594d2e6f0960a4f4993d678674012400468fd9090bc177fc01b7095a1a"`
Dec 02 12:54:18.370 INFO [stdout] 98f7fd594d2e6f0960a4f4993d678674012400468fd9090bc177fc01b7095a1a