[INFO] updating cached repository spacekookie/tinyrocket
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/spacekookie/tinyrocket
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/spacekookie/tinyrocket" "work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/tinyrocket"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/tinyrocket'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/spacekookie/tinyrocket" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/spacekookie/tinyrocket"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/spacekookie/tinyrocket'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 899654160ef57aeddffd59d209f6c38b95591b63
[INFO] sha for GitHub repo spacekookie/tinyrocket: 899654160ef57aeddffd59d209f6c38b95591b63
[INFO] validating manifest of spacekookie/tinyrocket 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 spacekookie/tinyrocket 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 spacekookie/tinyrocket
[INFO] finished frobbing spacekookie/tinyrocket
[INFO] frobbed toml for spacekookie/tinyrocket written to work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/tinyrocket/Cargo.toml
[INFO] started frobbing spacekookie/tinyrocket
[INFO] finished frobbing spacekookie/tinyrocket
[INFO] frobbed toml for spacekookie/tinyrocket written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/spacekookie/tinyrocket/Cargo.toml
[INFO] crate spacekookie/tinyrocket 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 spacekookie/tinyrocket 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/tinyrocket:/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] d4665bcb373d56af770e73a12b0cc4e14ed51619bbbcb99407bebfa2a364b295
[INFO] running `"docker" "start" "-a" "d4665bcb373d56af770e73a12b0cc4e14ed51619bbbcb99407bebfa2a364b295"`
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling yansi v0.3.4
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling lazy_static v0.2.11
[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/yansi-0.3.4/src/lib.rs:1:32
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(feature="nightly", feature(const_atomic_bool_new))]
[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 `yansi`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d4665bcb373d56af770e73a12b0cc4e14ed51619bbbcb99407bebfa2a364b295"`
[INFO] running `"docker" "rm" "-f" "d4665bcb373d56af770e73a12b0cc4e14ed51619bbbcb99407bebfa2a364b295"`
[INFO] [stdout] d4665bcb373d56af770e73a12b0cc4e14ed51619bbbcb99407bebfa2a364b295