[INFO] crate phf_macros 0.7.24 is already in cache
[INFO] extracting crate phf_macros 0.7.24 into work/ex/beta-1.38-1/sources/1.37.0/reg/phf_macros/0.7.24
[INFO] extracting crate phf_macros 0.7.24 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/phf_macros/0.7.24
[INFO] validating manifest of phf_macros-0.7.24 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 phf_macros-0.7.24 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 phf_macros-0.7.24
[INFO] finished frobbing phf_macros-0.7.24
[INFO] frobbed toml for phf_macros-0.7.24 written to work/ex/beta-1.38-1/sources/1.37.0/reg/phf_macros/0.7.24/Cargo.toml
[INFO] started frobbing phf_macros-0.7.24
[INFO] finished frobbing phf_macros-0.7.24
[INFO] frobbed toml for phf_macros-0.7.24 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/phf_macros/0.7.24/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 phf_macros-0.7.24 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/phf_macros/0.7.24:/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] 933e94c5f982fc36bf033a6944b50027ed8b556164678b61d70e39e6b7ebd265
[INFO] running `"docker" "start" "-a" "933e94c5f982fc36bf033a6944b50027ed8b556164678b61d70e39e6b7ebd265"`
[INFO] [stderr]    Compiling phf_macros v0.7.24 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `"docker" "inspect" "933e94c5f982fc36bf033a6944b50027ed8b556164678b61d70e39e6b7ebd265"`
[INFO] running `"docker" "rm" "-f" "933e94c5f982fc36bf033a6944b50027ed8b556164678b61d70e39e6b7ebd265"`
[INFO] [stdout] 933e94c5f982fc36bf033a6944b50027ed8b556164678b61d70e39e6b7ebd265
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/phf_macros/0.7.24:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 16b776f2bc3b2339a1486bf8f0fdd92634f400d3c2cefebbd8fdbc6c17db062e
[INFO] running `"docker" "start" "-a" "16b776f2bc3b2339a1486bf8f0fdd92634f400d3c2cefebbd8fdbc6c17db062e"`
[INFO] [stderr]    Compiling compiletest_rs v0.3.22
[INFO] [stderr]    Compiling rustfix v0.4.6
[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/compiletest_rs-0.3.22/src/lib.rs:13:39
[INFO] [stderr]    |
[INFO] [stderr] 13 | #![cfg_attr(not(feature = "norustc"), feature(rustc_private))]
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/compiletest_rs-0.3.22/src/lib.rs:14:38
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![cfg_attr(not(feature = "stable"), feature(test))]
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `compiletest_rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "16b776f2bc3b2339a1486bf8f0fdd92634f400d3c2cefebbd8fdbc6c17db062e"`
[INFO] running `"docker" "rm" "-f" "16b776f2bc3b2339a1486bf8f0fdd92634f400d3c2cefebbd8fdbc6c17db062e"`
[INFO] [stdout] 16b776f2bc3b2339a1486bf8f0fdd92634f400d3c2cefebbd8fdbc6c17db062e