[INFO] updating cached repository aesir-vanir/tyr
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/aesir-vanir/tyr
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/aesir-vanir/tyr" "work/ex/beta-1.38-1/sources/1.37.0/gh/aesir-vanir/tyr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/aesir-vanir/tyr'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aesir-vanir/tyr" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aesir-vanir/tyr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aesir-vanir/tyr'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2c46aa77affa69ad605ae2f19b87357b73c36723
[INFO] sha for GitHub repo aesir-vanir/tyr: 2c46aa77affa69ad605ae2f19b87357b73c36723
[INFO] validating manifest of aesir-vanir/tyr 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 aesir-vanir/tyr 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 aesir-vanir/tyr
[INFO] finished frobbing aesir-vanir/tyr
[INFO] frobbed toml for aesir-vanir/tyr written to work/ex/beta-1.38-1/sources/1.37.0/gh/aesir-vanir/tyr/Cargo.toml
[INFO] started frobbing aesir-vanir/tyr
[INFO] finished frobbing aesir-vanir/tyr
[INFO] frobbed toml for aesir-vanir/tyr written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aesir-vanir/tyr/Cargo.toml
[INFO] crate aesir-vanir/tyr 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 aesir-vanir/tyr 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/aesir-vanir/tyr:/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] 034ab64e5b432230cb81a37f5ec6e823dfc494a4b1ed3187c16045f15c87aa7e
[INFO] running `"docker" "start" "-a" "034ab64e5b432230cb81a37f5ec6e823dfc494a4b1ed3187c16045f15c87aa7e"`
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling derive_builder v0.7.0
[INFO] [stderr]    Compiling hex-slice v0.1.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling mimir v0.3.5
[INFO] [stderr]    Compiling term v0.5.1
[INFO] [stderr]    Compiling time v0.1.41
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling Inflector v0.11.3
[INFO] [stderr]    Compiling slog-try v0.2.0
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling getset v0.0.6
[INFO] [stderr]    Compiling darling_core v0.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling darling_macro v0.8.1
[INFO] [stderr]    Compiling darling v0.8.1
[INFO] [stderr]    Compiling derive_builder_core v0.4.0
[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/mimir-0.3.5/src/lib.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![feature(ptr_internals, try_from, untagged_unions)]
[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 `mimir`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "034ab64e5b432230cb81a37f5ec6e823dfc494a4b1ed3187c16045f15c87aa7e"`
[INFO] running `"docker" "rm" "-f" "034ab64e5b432230cb81a37f5ec6e823dfc494a4b1ed3187c16045f15c87aa7e"`
[INFO] [stdout] 034ab64e5b432230cb81a37f5ec6e823dfc494a4b1ed3187c16045f15c87aa7e