Dec 02 07:34:35.802 INFO testing FrozenDroid/arm-rs against 1.30.1 for beta-1.31-5
Dec 02 07:34:35.802 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 07:34:36.417 INFO [stdout] 8d6d02abb4004957a15b0d785ed3e6c49dcc198a99eef95739f0dd3039e7cf13
Dec 02 07:34:36.420 INFO running `"docker" "start" "-a" "8d6d02abb4004957a15b0d785ed3e6c49dcc198a99eef95739f0dd3039e7cf13"`
Dec 02 07:34:37.386 INFO [stderr] usermod: no changes
Dec 02 07:34:37.566 INFO [stderr]    Compiling rand_core v0.3.0
Dec 02 07:34:37.583 INFO [stderr]    Compiling cortex-m v0.5.8
Dec 02 07:34:37.583 INFO [stderr]    Compiling vcell v0.1.0
Dec 02 07:34:37.583 INFO [stderr]    Compiling cortex-m-rt v0.6.5
Dec 02 07:34:37.595 INFO [stderr]    Compiling aligned v0.2.0
Dec 02 07:34:37.595 INFO [stderr]    Compiling cortex-m-semihosting v0.3.2
Dec 02 07:34:37.595 INFO [stderr]    Compiling stable_deref_trait v1.1.1
Dec 02 07:34:37.595 INFO [stderr]    Compiling stm32l4 v0.3.2
Dec 02 07:34:38.275 INFO [stderr]    Compiling cortex-m-rtfm v0.4.0-beta.2
Dec 02 07:34:38.391 INFO [stderr]    Compiling armtest v0.1.0 (/source)
Dec 02 07:34:38.447 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 02 07:34:38.447 INFO [stderr] 
Dec 02 07:34:38.447 INFO [stderr] error: Could not compile `cortex-m-rtfm`.
Dec 02 07:34:38.447 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 07:34:38.525 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 02 07:34:38.525 INFO [stderr] 
Dec 02 07:34:38.531 INFO [stderr] error: Could not compile `armtest`.
Dec 02 07:34:38.531 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 07:34:41.899 INFO [stderr] error: build failed
Dec 02 07:34:41.899 INFO [stderr] su: No module specific data is present
Dec 02 07:34:43.135 INFO running `"docker" "inspect" "8d6d02abb4004957a15b0d785ed3e6c49dcc198a99eef95739f0dd3039e7cf13"`
Dec 02 07:34:43.417 INFO running `"docker" "rm" "-f" "8d6d02abb4004957a15b0d785ed3e6c49dcc198a99eef95739f0dd3039e7cf13"`
Dec 02 07:34:43.775 INFO [stdout] 8d6d02abb4004957a15b0d785ed3e6c49dcc198a99eef95739f0dd3039e7cf13