[INFO] crate semvercli 0.0.1 is already in cache
[INFO] extracting crate semvercli 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/semvercli/0.0.1
[INFO] extracting crate semvercli 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/semvercli/0.0.1
[INFO] validating manifest of semvercli-0.0.1 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 semvercli-0.0.1 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 semvercli-0.0.1
[INFO] finished frobbing semvercli-0.0.1
[INFO] frobbed toml for semvercli-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/semvercli/0.0.1/Cargo.toml
[INFO] started frobbing semvercli-0.0.1
[INFO] finished frobbing semvercli-0.0.1
[INFO] frobbed toml for semvercli-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/semvercli/0.0.1/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] [stderr]     Blocking waiting for file lock on package cache
[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 semvercli-0.0.1 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/semvercli/0.0.1:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b12b81ddcfa2f40aaaeb791abf876e8a246154154e29c8e7b1ec0eb3120c52b3
[INFO] running `"docker" "start" "-a" "b12b81ddcfa2f40aaaeb791abf876e8a246154154e29c8e7b1ec0eb3120c52b3"`
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling toml_edit v0.1.5
[INFO] [stderr]    Compiling semvercli v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:253:47
[INFO] [stderr]     |
[INFO] [stderr] 253 | fn execute(matches: &ArgMatches, stdout: &mut Write) {
[INFO] [stderr]     |                                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.94s
[INFO] running `"docker" "inspect" "b12b81ddcfa2f40aaaeb791abf876e8a246154154e29c8e7b1ec0eb3120c52b3"`
[INFO] running `"docker" "rm" "-f" "b12b81ddcfa2f40aaaeb791abf876e8a246154154e29c8e7b1ec0eb3120c52b3"`
[INFO] [stdout] b12b81ddcfa2f40aaaeb791abf876e8a246154154e29c8e7b1ec0eb3120c52b3
[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/semvercli/0.0.1:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f706e78708ee938cdf3f9bb1f061907ad957dd0f47041e7bd328325786f84391
[INFO] running `"docker" "start" "-a" "f706e78708ee938cdf3f9bb1f061907ad957dd0f47041e7bd328325786f84391"`
[INFO] [stderr]    Compiling semvercli v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:253:47
[INFO] [stderr]     |
[INFO] [stderr] 253 | fn execute(matches: &ArgMatches, stdout: &mut Write) {
[INFO] [stderr]     |                                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.70s
[INFO] running `"docker" "inspect" "f706e78708ee938cdf3f9bb1f061907ad957dd0f47041e7bd328325786f84391"`
[INFO] running `"docker" "rm" "-f" "f706e78708ee938cdf3f9bb1f061907ad957dd0f47041e7bd328325786f84391"`
[INFO] [stdout] f706e78708ee938cdf3f9bb1f061907ad957dd0f47041e7bd328325786f84391
[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/semvercli/0.0.1:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 56d314ef70cfc7885cebed3065669319b548134878ac91f7ba367fab0f13713c
[INFO] running `"docker" "start" "-a" "56d314ef70cfc7885cebed3065669319b548134878ac91f7ba367fab0f13713c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/semvercli-963d52e750416127
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::test_read ... ok
[INFO] [stdout] test test::test_bump ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "56d314ef70cfc7885cebed3065669319b548134878ac91f7ba367fab0f13713c"`
[INFO] running `"docker" "rm" "-f" "56d314ef70cfc7885cebed3065669319b548134878ac91f7ba367fab0f13713c"`
[INFO] [stdout] 56d314ef70cfc7885cebed3065669319b548134878ac91f7ba367fab0f13713c