[INFO] updating cached repository himanoa/testament-api
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/himanoa/testament-api
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/himanoa/testament-api" "work/ex/beta-1.38-1/sources/1.37.0/gh/himanoa/testament-api"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/himanoa/testament-api'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/himanoa/testament-api" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/himanoa/testament-api"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/himanoa/testament-api'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 46753b30dc4a13a157dbe30414aba25e0b589367
[INFO] sha for GitHub repo himanoa/testament-api: 46753b30dc4a13a157dbe30414aba25e0b589367
[INFO] validating manifest of himanoa/testament-api 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 himanoa/testament-api 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 himanoa/testament-api
[INFO] finished frobbing himanoa/testament-api
[INFO] frobbed toml for himanoa/testament-api written to work/ex/beta-1.38-1/sources/1.37.0/gh/himanoa/testament-api/Cargo.toml
[INFO] started frobbing himanoa/testament-api
[INFO] finished frobbing himanoa/testament-api
[INFO] frobbed toml for himanoa/testament-api written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/himanoa/testament-api/Cargo.toml
[INFO] crate himanoa/testament-api 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 himanoa/testament-api 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/himanoa/testament-api:/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] ec394686c2834be9c7f5065632e502ee192219a8d30de1c76b02cf067276e42a
[INFO] running `"docker" "start" "-a" "ec394686c2834be9c7f5065632e502ee192219a8d30de1c76b02cf067276e42a"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.15
[INFO] [stderr]    Compiling regex v1.0.4
[INFO] [stderr]    Compiling socket2 v0.3.8
[INFO] [stderr]    Compiling encoding_rs v0.8.6
[INFO] [stderr]    Compiling tokio-executor v0.1.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling base64 v0.10.0
[INFO] [stderr]    Compiling openssl-sys v0.9.36
[INFO] [stderr]    Compiling pear_codegen v0.0.20
[INFO] [stderr]    Compiling rocket v0.3.17
[INFO] [stderr]    Compiling rocket_codegen v0.3.17
[INFO] [stderr]    Compiling lock_api v0.1.3
[INFO] [stderr]    Compiling bytes v0.4.9
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling mio v0.6.15
[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/lock_api-0.1.3/src/lib.rs:85:34
[INFO] [stderr]    |
[INFO] [stderr] 85 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling tokio-current-thread v0.1.1
[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 `lock_api`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "ec394686c2834be9c7f5065632e502ee192219a8d30de1c76b02cf067276e42a"`
[INFO] running `"docker" "rm" "-f" "ec394686c2834be9c7f5065632e502ee192219a8d30de1c76b02cf067276e42a"`
[INFO] [stdout] ec394686c2834be9c7f5065632e502ee192219a8d30de1c76b02cf067276e42a