[INFO] updating cached repository skade/strand
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/skade/strand
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/strand" "work/ex/beta-1.38-1/sources/1.37.0/gh/skade/strand"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/skade/strand'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/strand" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skade/strand"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skade/strand'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f2cd2549b2360c5e15e67c5ad7a7ebe2c3fa7fcb
[INFO] sha for GitHub repo skade/strand: f2cd2549b2360c5e15e67c5ad7a7ebe2c3fa7fcb
[INFO] validating manifest of skade/strand 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 skade/strand 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 skade/strand
[INFO] finished frobbing skade/strand
[INFO] frobbed toml for skade/strand written to work/ex/beta-1.38-1/sources/1.37.0/gh/skade/strand/Cargo.toml
[INFO] started frobbing skade/strand
[INFO] finished frobbing skade/strand
[INFO] frobbed toml for skade/strand written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skade/strand/Cargo.toml
[INFO] crate skade/strand already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/skade/strand/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 skade/strand 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/skade/strand:/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] f4ea63915072279250492775094851e6ad6b9eeb1b823625946fecf7731deaeb
[INFO] running `"docker" "start" "-a" "f4ea63915072279250492775094851e6ad6b9eeb1b823625946fecf7731deaeb"`
[INFO] [stderr]    Compiling strand v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mutable.rs:16:42
[INFO] [stderr]    |
[INFO] [stderr] 16 |   fn evolve<'a>(&'a mut self, event: &'a Event<T = T>) -> Result<(), Errors>;
[INFO] [stderr]    |                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mutable.rs:20:33
[INFO] [stderr]    |
[INFO] [stderr] 20 |   fn as_event<T,S>(self) -> Box<Event<T = T>+Send>;
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mutable.rs:24:42
[INFO] [stderr]    |
[INFO] [stderr] 24 |   fn evolve<'a>(&'a mut self, event: &'a Event<T = T>) -> Result<(), Errors> {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/immutable.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 |   fn evolve(self, event: &Event<T = T>) -> Result<A, Errors>;
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/immutable.rs:20:31
[INFO] [stderr]    |
[INFO] [stderr] 20 |   fn as_event<T>(self) -> Box<Event<T = T>+Send>;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/immutable.rs:24:27
[INFO] [stderr]    |
[INFO] [stderr] 24 |   fn evolve(self, event: &Event<T = T>) -> Result<A, Errors>{
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "f4ea63915072279250492775094851e6ad6b9eeb1b823625946fecf7731deaeb"`
[INFO] running `"docker" "rm" "-f" "f4ea63915072279250492775094851e6ad6b9eeb1b823625946fecf7731deaeb"`
[INFO] [stdout] f4ea63915072279250492775094851e6ad6b9eeb1b823625946fecf7731deaeb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/skade/strand:/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] 4de5988fb1ba68b09aede2c04bf7fe808e5969e4f54f3d4e5e09b22def76d11c
[INFO] running `"docker" "start" "-a" "4de5988fb1ba68b09aede2c04bf7fe808e5969e4f54f3d4e5e09b22def76d11c"`
[INFO] [stderr]    Compiling strand v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mutable.rs:16:42
[INFO] [stderr]    |
[INFO] [stderr] 16 |   fn evolve<'a>(&'a mut self, event: &'a Event<T = T>) -> Result<(), Errors>;
[INFO] [stderr]    |                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mutable.rs:20:33
[INFO] [stderr]    |
[INFO] [stderr] 20 |   fn as_event<T,S>(self) -> Box<Event<T = T>+Send>;
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mutable.rs:24:42
[INFO] [stderr]    |
[INFO] [stderr] 24 |   fn evolve<'a>(&'a mut self, event: &'a Event<T = T>) -> Result<(), Errors> {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/immutable.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 |   fn evolve(self, event: &Event<T = T>) -> Result<A, Errors>;
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/immutable.rs:20:31
[INFO] [stderr]    |
[INFO] [stderr] 20 |   fn as_event<T>(self) -> Box<Event<T = T>+Send>;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/immutable.rs:24:27
[INFO] [stderr]    |
[INFO] [stderr] 24 |   fn evolve(self, event: &Event<T = T>) -> Result<A, Errors>{
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Event<T = T>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `"docker" "inspect" "4de5988fb1ba68b09aede2c04bf7fe808e5969e4f54f3d4e5e09b22def76d11c"`
[INFO] running `"docker" "rm" "-f" "4de5988fb1ba68b09aede2c04bf7fe808e5969e4f54f3d4e5e09b22def76d11c"`
[INFO] [stdout] 4de5988fb1ba68b09aede2c04bf7fe808e5969e4f54f3d4e5e09b22def76d11c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/skade/strand:/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] 9a15282e67a6215f59b4054e66092914a17c2c7752d654c400ea99b1a2f4dd4a
[INFO] running `"docker" "start" "-a" "9a15282e67a6215f59b4054e66092914a17c2c7752d654c400ea99b1a2f4dd4a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/strand-28f22a49b4482e77
[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]      Running /opt/crater/target/debug/deps/immutable-95269b6447d029b7
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_branch ... ok
[INFO] [stdout] test tests::test_unmet_pre_condition ... ok
[INFO] [stdout] test tests::test_state_changes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mutable-eb9c19b0c302b84d
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_state_changes ... ok
[INFO] [stdout] test tests::test_unmet_pre_condition ... ok
[INFO] [stdout] test tests::test_branch ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests strand
[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" "9a15282e67a6215f59b4054e66092914a17c2c7752d654c400ea99b1a2f4dd4a"`
[INFO] running `"docker" "rm" "-f" "9a15282e67a6215f59b4054e66092914a17c2c7752d654c400ea99b1a2f4dd4a"`
[INFO] [stdout] 9a15282e67a6215f59b4054e66092914a17c2c7752d654c400ea99b1a2f4dd4a