[INFO] updating cached repository williamsandrew/bobomb
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/williamsandrew/bobomb
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/williamsandrew/bobomb" "work/ex/beta-1.38-1/sources/1.37.0/gh/williamsandrew/bobomb"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/williamsandrew/bobomb'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/williamsandrew/bobomb" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/williamsandrew/bobomb"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/williamsandrew/bobomb'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dd610d5003ec4e56720accece3eabf4757b13e8a
[INFO] sha for GitHub repo williamsandrew/bobomb: dd610d5003ec4e56720accece3eabf4757b13e8a
[INFO] validating manifest of williamsandrew/bobomb on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of williamsandrew/bobomb on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing williamsandrew/bobomb
[INFO] finished frobbing williamsandrew/bobomb
[INFO] frobbed toml for williamsandrew/bobomb written to work/ex/beta-1.38-1/sources/1.37.0/gh/williamsandrew/bobomb/Cargo.toml
[INFO] started frobbing williamsandrew/bobomb
[INFO] finished frobbing williamsandrew/bobomb
[INFO] frobbed toml for williamsandrew/bobomb written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/williamsandrew/bobomb/Cargo.toml
[INFO] crate williamsandrew/bobomb already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing williamsandrew/bobomb against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/williamsandrew/bobomb:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a269da1ab4521fc44a27cc19b3fdfbd1f501acf7036ff9bfad61625c702f0927
[INFO] running `"docker" "start" "-a" "a269da1ab4521fc44a27cc19b3fdfbd1f501acf7036ff9bfad61625c702f0927"`
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling openssl v0.9.6
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling owning_ref v0.2.4
[INFO] [stderr]    Compiling protobuf v1.1.0
[INFO] [stderr]    Compiling probe v0.1.6 (https://github.com/cuviper/rust-libprobe.git#98b71d8f)
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/rust-libprobe-428800595a569dcb/98b71d8/src/lib.rs:99:1
[INFO] [stderr]    |
[INFO] [stderr] 99 | #![feature(asm)]
[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 `probe`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a269da1ab4521fc44a27cc19b3fdfbd1f501acf7036ff9bfad61625c702f0927"`
[INFO] running `"docker" "rm" "-f" "a269da1ab4521fc44a27cc19b3fdfbd1f501acf7036ff9bfad61625c702f0927"`
[INFO] [stdout] a269da1ab4521fc44a27cc19b3fdfbd1f501acf7036ff9bfad61625c702f0927