[INFO] fetching crate two_timer 1.2.0...
[INFO] extracting crate two_timer 1.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/two_timer/1.2.0
[INFO] extracting crate two_timer 1.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/two_timer/1.2.0
[INFO] validating manifest of two_timer-1.2.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of two_timer-1.2.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing two_timer-1.2.0
[INFO] finished frobbing two_timer-1.2.0
[INFO] frobbed toml for two_timer-1.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/two_timer/1.2.0/Cargo.toml
[INFO] started frobbing two_timer-1.2.0
[INFO] finished frobbing two_timer-1.2.0
[INFO] frobbed toml for two_timer-1.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/two_timer/1.2.0/Cargo.toml
[INFO] crate two_timer-1.2.0 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing two_timer-1.2.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/two_timer/1.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] bce1fadf9721691f237a7e518ef7b9961077a3eaad0b002e864e700ec6f9b8ca
[INFO] running `"docker" "start" "-a" "bce1fadf9721691f237a7e518ef7b9961077a3eaad0b002e864e700ec6f9b8ca"`
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling pidgin v0.3.0
[INFO] [stderr]    Compiling two_timer v1.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.43s
[INFO] running `"docker" "inspect" "bce1fadf9721691f237a7e518ef7b9961077a3eaad0b002e864e700ec6f9b8ca"`
[INFO] running `"docker" "rm" "-f" "bce1fadf9721691f237a7e518ef7b9961077a3eaad0b002e864e700ec6f9b8ca"`
[INFO] [stdout] bce1fadf9721691f237a7e518ef7b9961077a3eaad0b002e864e700ec6f9b8ca
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/two_timer/1.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] bed7d2f63461452e8c1c4c70ea72ef085596f73d5b30425bcaf808f9dd870dff
[INFO] running `"docker" "start" "-a" "bed7d2f63461452e8c1c4c70ea72ef085596f73d5b30425bcaf808f9dd870dff"`
[INFO] [stderr]    Compiling two_timer v1.2.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> tests/tests.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `two_timer`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "bed7d2f63461452e8c1c4c70ea72ef085596f73d5b30425bcaf808f9dd870dff"`
[INFO] running `"docker" "rm" "-f" "bed7d2f63461452e8c1c4c70ea72ef085596f73d5b30425bcaf808f9dd870dff"`
[INFO] [stdout] bed7d2f63461452e8c1c4c70ea72ef085596f73d5b30425bcaf808f9dd870dff