[INFO] updating cached repository jswrenn/bam
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jswrenn/bam
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jswrenn/bam" "work/ex/beta-1.38-1/sources/1.37.0/gh/jswrenn/bam"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jswrenn/bam'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jswrenn/bam" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jswrenn/bam"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jswrenn/bam'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a29d1bfa7463446b24b61194d3f888c6e973d581
[INFO] sha for GitHub repo jswrenn/bam: a29d1bfa7463446b24b61194d3f888c6e973d581
[INFO] validating manifest of jswrenn/bam 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 jswrenn/bam 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 jswrenn/bam
[INFO] finished frobbing jswrenn/bam
[INFO] frobbed toml for jswrenn/bam written to work/ex/beta-1.38-1/sources/1.37.0/gh/jswrenn/bam/Cargo.toml
[INFO] started frobbing jswrenn/bam
[INFO] finished frobbing jswrenn/bam
[INFO] frobbed toml for jswrenn/bam written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jswrenn/bam/Cargo.toml
[INFO] crate jswrenn/bam 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 jswrenn/bam 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jswrenn/bam:/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] 2854ca8f825d9ae141a5cdc2c10ee1a2e9f724016098132f8e90b258c85a7237
[INFO] running `"docker" "start" "-a" "2854ca8f825d9ae141a5cdc2c10ee1a2e9f724016098132f8e90b258c85a7237"`
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling dimensioned v0.6.0
[INFO] [stderr]    Compiling memalloc v0.1.0
[INFO] [stderr]    Compiling wmidi v1.0.0
[INFO] [stderr]    Compiling alsa-sys v0.1.1
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling pitch_calc v0.11.1
[INFO] [stderr]    Compiling generic-array v0.5.1
[INFO] [stderr]    Compiling alsa v0.2.0
[INFO] [stderr]    Compiling midir v0.5.0
[INFO] [stderr]    Compiling beep v0.2.0
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/beep-0.2.0/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(libc)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/beep-0.2.0/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/beep-0.2.0/src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use libc::ioctl;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/beep-0.2.0/src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     ioctl(DEVICE.as_raw_fd(), KIOCSOUND,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `beep`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2854ca8f825d9ae141a5cdc2c10ee1a2e9f724016098132f8e90b258c85a7237"`
[INFO] running `"docker" "rm" "-f" "2854ca8f825d9ae141a5cdc2c10ee1a2e9f724016098132f8e90b258c85a7237"`
[INFO] [stdout] 2854ca8f825d9ae141a5cdc2c10ee1a2e9f724016098132f8e90b258c85a7237