[INFO] crate domafic 0.2.0 is already in cache
[INFO] extracting crate domafic 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/domafic/0.2.0
[INFO] extracting crate domafic 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/domafic/0.2.0
[INFO] validating manifest of domafic-0.2.0 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 domafic-0.2.0 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 domafic-0.2.0
[INFO] finished frobbing domafic-0.2.0
[INFO] frobbed toml for domafic-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/domafic/0.2.0/Cargo.toml
[INFO] started frobbing domafic-0.2.0
[INFO] finished frobbing domafic-0.2.0
[INFO] frobbed toml for domafic-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/domafic/0.2.0/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 domafic-0.2.0 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/domafic/0.2.0:/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] b9a2361d31a48dae42616b1dd716b622898b9aee560006df88f43d182892dfdc
[INFO] running `"docker" "start" "-a" "b9a2361d31a48dae42616b1dd716b622898b9aee560006df88f43d182892dfdc"`
[INFO] [stderr]    Compiling marksman_escape v0.1.2
[INFO] [stderr]    Compiling either_n v0.2.0
[INFO] [stderr]    Compiling domafic v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.43s
[INFO] running `"docker" "inspect" "b9a2361d31a48dae42616b1dd716b622898b9aee560006df88f43d182892dfdc"`
[INFO] running `"docker" "rm" "-f" "b9a2361d31a48dae42616b1dd716b622898b9aee560006df88f43d182892dfdc"`
[INFO] [stdout] b9a2361d31a48dae42616b1dd716b622898b9aee560006df88f43d182892dfdc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/domafic/0.2.0:/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] 0340a8aeb0fd7848a22abf39be44213a1138c9323df22e15d3b1e774f91f7d94
[INFO] running `"docker" "start" "-a" "0340a8aeb0fd7848a22abf39be44213a1138c9323df22e15d3b1e774f91f7d94"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling domafic v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]    --> src/lib.rs:126:19
[INFO] [stderr]     |
[INFO] [stderr] 126 | #![cfg_attr(test, feature(conservative_impl_trait))]
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/lib.rs:315:13
[INFO] [stderr]     |
[INFO] [stderr] 315 |           div((
[INFO] [stderr]     |  _____________^
[INFO] [stderr] 316 | |             table((
[INFO] [stderr] 317 | |                 if include_rows {
[INFO] [stderr] 318 | |                     Either2::One((
[INFO] [stderr] ...   |
[INFO] [stderr] 325 | |             ))
[INFO] [stderr] 326 | |         ))
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 315 |         div(
[INFO] [stderr] 316 |             table((
[INFO] [stderr] 317 |                 if include_rows {
[INFO] [stderr] 318 |                     Either2::One((
[INFO] [stderr] 319 |                         tr("a"),
[INFO] [stderr] 320 |                         tr("b"),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/lib.rs:316:19
[INFO] [stderr]     |
[INFO] [stderr] 316 |               table((
[INFO] [stderr]     |  ___________________^
[INFO] [stderr] 317 | |                 if include_rows {
[INFO] [stderr] 318 | |                     Either2::One((
[INFO] [stderr] 319 | |                         tr("a"),
[INFO] [stderr] ...   |
[INFO] [stderr] 324 | |                 }
[INFO] [stderr] 325 | |             ))
[INFO] [stderr]     | |_____________^
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 316 |             table(
[INFO] [stderr] 317 |                 if include_rows {
[INFO] [stderr] 318 |                     Either2::One((
[INFO] [stderr] 319 |                         tr("a"),
[INFO] [stderr] 320 |                         tr("b"),
[INFO] [stderr] 321 |                     ))
[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 `domafic`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0340a8aeb0fd7848a22abf39be44213a1138c9323df22e15d3b1e774f91f7d94"`
[INFO] running `"docker" "rm" "-f" "0340a8aeb0fd7848a22abf39be44213a1138c9323df22e15d3b1e774f91f7d94"`
[INFO] [stdout] 0340a8aeb0fd7848a22abf39be44213a1138c9323df22e15d3b1e774f91f7d94