[INFO] crate display 0.1.2 is already in cache
[INFO] extracting crate display 0.1.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/display/0.1.2
[INFO] extracting crate display 0.1.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/display/0.1.2
[INFO] validating manifest of display-0.1.2 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 display-0.1.2 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 display-0.1.2
[INFO] finished frobbing display-0.1.2
[INFO] frobbed toml for display-0.1.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/display/0.1.2/Cargo.toml
[INFO] started frobbing display-0.1.2
[INFO] finished frobbing display-0.1.2
[INFO] frobbed toml for display-0.1.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/display/0.1.2/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] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing display-0.1.2 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/display/0.1.2:/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] 0164a7e4f0e7a6346702f5b2d431afae7a4ae2e8f71d9426662009cc192ea1c8
[INFO] running `"docker" "start" "-a" "0164a7e4f0e7a6346702f5b2d431afae7a4ae2e8f71d9426662009cc192ea1c8"`
[INFO] [stderr]    Compiling display v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `"docker" "inspect" "0164a7e4f0e7a6346702f5b2d431afae7a4ae2e8f71d9426662009cc192ea1c8"`
[INFO] running `"docker" "rm" "-f" "0164a7e4f0e7a6346702f5b2d431afae7a4ae2e8f71d9426662009cc192ea1c8"`
[INFO] [stdout] 0164a7e4f0e7a6346702f5b2d431afae7a4ae2e8f71d9426662009cc192ea1c8
[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/display/0.1.2:/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] ae8833b5ef2962b894aeb01016456e2c4c5a08a2d275bc2be171903f7aaa8ac4
[INFO] running `"docker" "start" "-a" "ae8833b5ef2962b894aeb01016456e2c4c5a08a2d275bc2be171903f7aaa8ac4"`
[INFO] [stderr]    Compiling display v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "ae8833b5ef2962b894aeb01016456e2c4c5a08a2d275bc2be171903f7aaa8ac4"`
[INFO] running `"docker" "rm" "-f" "ae8833b5ef2962b894aeb01016456e2c4c5a08a2d275bc2be171903f7aaa8ac4"`
[INFO] [stdout] ae8833b5ef2962b894aeb01016456e2c4c5a08a2d275bc2be171903f7aaa8ac4
[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/display/0.1.2:/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"`
[INFO] [stdout] e8dec8e3750b277d79ef0dd73d6a4dd1792f9454310706322604ed90a645f03e
[INFO] running `"docker" "start" "-a" "e8dec8e3750b277d79ef0dd73d6a4dd1792f9454310706322604ed90a645f03e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/display-b00e2f1cc401e1de
[INFO] [stderr]    Doc-tests display
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error[E0659]: `display` is ambiguous (name vs any other name during import resolution)
[INFO] [stderr]  --> /opt/crater/workdir/src/lib.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub use display::*;
[INFO] [stderr]   |         ^^^^^^^ ambiguous name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `display` could refer to a crate passed with `--extern`
[INFO] [stderr]   = help: use `::display` to refer to this crate unambiguously
[INFO] [stderr] note: `display` could also refer to the module defined here
[INFO] [stderr]  --> /opt/crater/workdir/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub mod display;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   = help: use `crate::display` to refer to this module unambiguously
[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] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e8dec8e3750b277d79ef0dd73d6a4dd1792f9454310706322604ed90a645f03e"`
[INFO] running `"docker" "rm" "-f" "e8dec8e3750b277d79ef0dd73d6a4dd1792f9454310706322604ed90a645f03e"`
[INFO] [stdout] e8dec8e3750b277d79ef0dd73d6a4dd1792f9454310706322604ed90a645f03e