[INFO] crate solvent 0.8.1 is already in cache
[INFO] extracting crate solvent 0.8.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/solvent/0.8.1
[INFO] extracting crate solvent 0.8.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/solvent/0.8.1
[INFO] validating manifest of solvent-0.8.1 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 solvent-0.8.1 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 solvent-0.8.1
[INFO] finished frobbing solvent-0.8.1
[INFO] frobbed toml for solvent-0.8.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/solvent/0.8.1/Cargo.toml
[INFO] started frobbing solvent-0.8.1
[INFO] finished frobbing solvent-0.8.1
[INFO] frobbed toml for solvent-0.8.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/solvent/0.8.1/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 solvent-0.8.1 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-5/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/solvent/0.8.1:/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] 232c76f73b4d36b629c1f41129b086ab4333c1a3608b7f40dc2d6ed2ef9f8c76
[INFO] running `"docker" "start" "-a" "232c76f73b4d36b629c1f41129b086ab4333c1a3608b7f40dc2d6ed2ef9f8c76"`
[INFO] [stderr]    Compiling solvent v0.8.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "232c76f73b4d36b629c1f41129b086ab4333c1a3608b7f40dc2d6ed2ef9f8c76"`
[INFO] running `"docker" "rm" "-f" "232c76f73b4d36b629c1f41129b086ab4333c1a3608b7f40dc2d6ed2ef9f8c76"`
[INFO] [stdout] 232c76f73b4d36b629c1f41129b086ab4333c1a3608b7f40dc2d6ed2ef9f8c76
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/solvent/0.8.1:/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] 68c845d61ff0bde38fa2d623a2c5e71b08d58ed63d1dbac341576c09868604a4
[INFO] running `"docker" "start" "-a" "68c845d61ff0bde38fa2d623a2c5e71b08d58ed63d1dbac341576c09868604a4"`
[INFO] [stderr]    Compiling solvent v0.8.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "68c845d61ff0bde38fa2d623a2c5e71b08d58ed63d1dbac341576c09868604a4"`
[INFO] running `"docker" "rm" "-f" "68c845d61ff0bde38fa2d623a2c5e71b08d58ed63d1dbac341576c09868604a4"`
[INFO] [stdout] 68c845d61ff0bde38fa2d623a2c5e71b08d58ed63d1dbac341576c09868604a4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/solvent/0.8.1:/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] 50879b5615f8208901461c6acea84c33eba684e9ab18a1647377887272c66e86
[INFO] running `"docker" "start" "-a" "50879b5615f8208901461c6acea84c33eba684e9ab18a1647377887272c66e86"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/solvent-4fdb5886aa323174
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test::solvent_test_branching ... ok
[INFO] [stdout] test test::solvent_test_circular ... ok
[INFO] [stdout] test test::solvent_test_satisfied_stoppage ... ok
[INFO] [stdout] test test::solvent_test_updating_dependencies ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests solvent
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs -  (line 51) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "50879b5615f8208901461c6acea84c33eba684e9ab18a1647377887272c66e86"`
[INFO] running `"docker" "rm" "-f" "50879b5615f8208901461c6acea84c33eba684e9ab18a1647377887272c66e86"`
[INFO] [stdout] 50879b5615f8208901461c6acea84c33eba684e9ab18a1647377887272c66e86