[INFO] crate tryfromfail 0.1.0 is already in cache
[INFO] extracting crate tryfromfail 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/tryfromfail/0.1.0
[INFO] extracting crate tryfromfail 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tryfromfail/0.1.0
[INFO] validating manifest of tryfromfail-0.1.0 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 tryfromfail-0.1.0 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 tryfromfail-0.1.0
[INFO] finished frobbing tryfromfail-0.1.0
[INFO] frobbed toml for tryfromfail-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tryfromfail/0.1.0/Cargo.toml
[INFO] started frobbing tryfromfail-0.1.0
[INFO] finished frobbing tryfromfail-0.1.0
[INFO] frobbed toml for tryfromfail-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tryfromfail/0.1.0/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 tryfromfail-0.1.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tryfromfail/0.1.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] dc10f0844d00f3365c2c96821a4af5cd6ba50b0a97b730246a96d26e547b53b3
[INFO] running `"docker" "start" "-a" "dc10f0844d00f3365c2c96821a4af5cd6ba50b0a97b730246a96d26e547b53b3"`
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling tryfromfail v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.44s
[INFO] running `"docker" "inspect" "dc10f0844d00f3365c2c96821a4af5cd6ba50b0a97b730246a96d26e547b53b3"`
[INFO] running `"docker" "rm" "-f" "dc10f0844d00f3365c2c96821a4af5cd6ba50b0a97b730246a96d26e547b53b3"`
[INFO] [stdout] dc10f0844d00f3365c2c96821a4af5cd6ba50b0a97b730246a96d26e547b53b3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tryfromfail/0.1.0:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] b1e17066dcfe766d773bd58293824058ebbcf24a331d932a1bcaddaf2049cfe7
[INFO] running `"docker" "start" "-a" "b1e17066dcfe766d773bd58293824058ebbcf24a331d932a1bcaddaf2049cfe7"`
[INFO] [stderr]    Compiling tryfromfail v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0659]: `FailingTryFrom` is ambiguous (derive helper attribute vs any other name)
[INFO] [stderr]  --> tests/test.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[FailingTryFrom(OtherType, AnotherType)]
[INFO] [stderr]   |   ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stderr]   |
[INFO] [stderr] note: `FailingTryFrom` could refer to the derive helper attribute defined here
[INFO] [stderr]  --> tests/test.rs:6:28
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[derive(Debug, PartialEq, FailingTryFrom)]
[INFO] [stderr]   |                            ^^^^^^^^^^^^^^
[INFO] [stderr] note: `FailingTryFrom` could also refer to the derive macro imported here
[INFO] [stderr]  --> tests/test.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[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 E0659`.
[INFO] [stderr] error: Could not compile `tryfromfail`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b1e17066dcfe766d773bd58293824058ebbcf24a331d932a1bcaddaf2049cfe7"`
[INFO] running `"docker" "rm" "-f" "b1e17066dcfe766d773bd58293824058ebbcf24a331d932a1bcaddaf2049cfe7"`
[INFO] [stdout] b1e17066dcfe766d773bd58293824058ebbcf24a331d932a1bcaddaf2049cfe7