[INFO] crate tweet 0.3.0 is already in cache
[INFO] extracting crate tweet 0.3.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/tweet/0.3.0
[INFO] extracting crate tweet 0.3.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tweet/0.3.0
[INFO] validating manifest of tweet-0.3.0 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 tweet-0.3.0 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 tweet-0.3.0
[INFO] finished frobbing tweet-0.3.0
[INFO] frobbed toml for tweet-0.3.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tweet/0.3.0/Cargo.toml
[INFO] started frobbing tweet-0.3.0
[INFO] finished frobbing tweet-0.3.0
[INFO] frobbed toml for tweet-0.3.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tweet/0.3.0/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing tweet-0.3.0 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tweet/0.3.0:/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] 30286ff509a408ced0b04becfae6ff02a9c80b6eff9a05defcd81c5aa2b11460
[INFO] running `"docker" "start" "-a" "30286ff509a408ced0b04becfae6ff02a9c80b6eff9a05defcd81c5aa2b11460"`
[INFO] [stderr]    Compiling tweet v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.40s
[INFO] running `"docker" "inspect" "30286ff509a408ced0b04becfae6ff02a9c80b6eff9a05defcd81c5aa2b11460"`
[INFO] running `"docker" "rm" "-f" "30286ff509a408ced0b04becfae6ff02a9c80b6eff9a05defcd81c5aa2b11460"`
[INFO] [stdout] 30286ff509a408ced0b04becfae6ff02a9c80b6eff9a05defcd81c5aa2b11460
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tweet/0.3.0:/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] 078f6fee2fecd1f6b4abea1d1b700bb46ad4c27aec4a2ae4d95e0f92fe5f2851
[INFO] running `"docker" "start" "-a" "078f6fee2fecd1f6b4abea1d1b700bb46ad4c27aec4a2ae4d95e0f92fe5f2851"`
[INFO] [stderr]    Compiling tweet v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.66s
[INFO] running `"docker" "inspect" "078f6fee2fecd1f6b4abea1d1b700bb46ad4c27aec4a2ae4d95e0f92fe5f2851"`
[INFO] running `"docker" "rm" "-f" "078f6fee2fecd1f6b4abea1d1b700bb46ad4c27aec4a2ae4d95e0f92fe5f2851"`
[INFO] [stdout] 078f6fee2fecd1f6b4abea1d1b700bb46ad4c27aec4a2ae4d95e0f92fe5f2851
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tweet/0.3.0:/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"`
[INFO] [stdout] 6fc819ccc4fc9838ce8e9afe95e05556a013015ef458613c5ff29fffccb2db31
[INFO] running `"docker" "start" "-a" "6fc819ccc4fc9838ce8e9afe95e05556a013015ef458613c5ff29fffccb2db31"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tweet-dd0167cb8eb7516c
[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]    Doc-tests tweet
[INFO] [stderr] error[E0659]: `tweet` is ambiguous (name vs any other name during import resolution)
[INFO] [stderr]   --> /opt/crater/workdir/src/model/mod.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub use tweet::{ExtendedTweet, Tweet};
[INFO] [stderr]    |         ^^^^^ ambiguous name
[INFO] [stderr]    |
[INFO] [stderr]    = note: `tweet` could refer to an extern crate passed with `--extern`
[INFO] [stderr]    = help: use `::tweet` to refer to this extern crate unambiguously
[INFO] [stderr] note: `tweet` could also refer to the module defined here
[INFO] [stderr]   --> /opt/crater/workdir/src/model/mod.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | mod tweet;
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr]    = help: use `self::tweet` 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" "6fc819ccc4fc9838ce8e9afe95e05556a013015ef458613c5ff29fffccb2db31"`
[INFO] running `"docker" "rm" "-f" "6fc819ccc4fc9838ce8e9afe95e05556a013015ef458613c5ff29fffccb2db31"`
[INFO] [stdout] 6fc819ccc4fc9838ce8e9afe95e05556a013015ef458613c5ff29fffccb2db31