[INFO] fetching crate backoff 0.1.3...
[INFO] extracting crate backoff 0.1.3 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/backoff/0.1.3
[INFO] extracting crate backoff 0.1.3 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/backoff/0.1.3
[INFO] validating manifest of backoff-0.1.3 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of backoff-0.1.3 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing backoff-0.1.3
[INFO] finished frobbing backoff-0.1.3
[INFO] frobbed toml for backoff-0.1.3 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/backoff/0.1.3/Cargo.toml
[INFO] started frobbing backoff-0.1.3
[INFO] finished frobbing backoff-0.1.3
[INFO] frobbed toml for backoff-0.1.3 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/backoff/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing backoff-0.1.3 against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/backoff/0.1.3:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 8fbcd469b4d81cc6d7581e096b5d168bf8e81f199a61c435abdefa29abab1e74
[INFO] running `"docker" "start" "-a" "8fbcd469b4d81cc6d7581e096b5d168bf8e81f199a61c435abdefa29abab1e74"`
[INFO] [stderr]    Compiling backoff v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:34:64
[INFO] [stderr]    |
[INFO] [stderr] 34 |             Error::Permanent(ref err) => ("Permanent", err as &fmt::Debug),
[INFO] [stderr]    |                                                                ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[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/error.rs:35:64
[INFO] [stderr]    |
[INFO] [stderr] 35 |             Error::Transient(ref err) => ("Transient", err as &fmt::Debug),
[INFO] [stderr]    |                                                                ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:51:32
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:54:46
[INFO] [stderr]    |
[INFO] [stderr] 54 |             Error::Transient(ref err) => err.cause(),
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "8fbcd469b4d81cc6d7581e096b5d168bf8e81f199a61c435abdefa29abab1e74"`
[INFO] running `"docker" "rm" "-f" "8fbcd469b4d81cc6d7581e096b5d168bf8e81f199a61c435abdefa29abab1e74"`
[INFO] [stdout] 8fbcd469b4d81cc6d7581e096b5d168bf8e81f199a61c435abdefa29abab1e74
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/backoff/0.1.3:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2b79a8be974be935ede3424096b2fe9466572930073afc9c8089f13d029ab29b
[INFO] running `"docker" "start" "-a" "2b79a8be974be935ede3424096b2fe9466572930073afc9c8089f13d029ab29b"`
[INFO] [stderr]    Compiling backoff v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:34:64
[INFO] [stderr]    |
[INFO] [stderr] 34 |             Error::Permanent(ref err) => ("Permanent", err as &fmt::Debug),
[INFO] [stderr]    |                                                                ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[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/error.rs:35:64
[INFO] [stderr]    |
[INFO] [stderr] 35 |             Error::Transient(ref err) => ("Transient", err as &fmt::Debug),
[INFO] [stderr]    |                                                                ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:51:32
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:54:46
[INFO] [stderr]    |
[INFO] [stderr] 54 |             Error::Transient(ref err) => err.cause(),
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.82s
[INFO] running `"docker" "inspect" "2b79a8be974be935ede3424096b2fe9466572930073afc9c8089f13d029ab29b"`
[INFO] running `"docker" "rm" "-f" "2b79a8be974be935ede3424096b2fe9466572930073afc9c8089f13d029ab29b"`
[INFO] [stdout] 2b79a8be974be935ede3424096b2fe9466572930073afc9c8089f13d029ab29b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/backoff/0.1.3:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] efe2921333a8ad26d63bb30685d988fdce70f81ff4e1fefbd0792c654c55d325
[INFO] running `"docker" "start" "-a" "efe2921333a8ad26d63bb30685d988fdce70f81ff4e1fefbd0792c654c55d325"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backoff-69549cc5f97a2569
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test exponential::get_randomized_interval ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test max_elapsed_time ... ok
[INFO] [stdout] test backoff ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/exponential-6686602d2c3ad383
[INFO] [stdout] test get_elapsed_time ... 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/retry-bf57751f78f941be
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test permanent_error_immediately_returned ... ok
[INFO] [stdout] test retry ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests backoff
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs -  (line 19) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 9) ... ignored
[INFO] [stdout] test src/retry.rs - retry::Operation::retry_notify (line 47) ... ok
[INFO] [stdout] test src/retry.rs - retry::Operation::retry (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "efe2921333a8ad26d63bb30685d988fdce70f81ff4e1fefbd0792c654c55d325"`
[INFO] running `"docker" "rm" "-f" "efe2921333a8ad26d63bb30685d988fdce70f81ff4e1fefbd0792c654c55d325"`
[INFO] [stdout] efe2921333a8ad26d63bb30685d988fdce70f81ff4e1fefbd0792c654c55d325