[INFO] updating cached repository https://github.com/yoshuawuyts/exponential-backoff
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 17eede65ff722fe65e8c0ccaa96bc1a0594fcc9f
[INFO] testing yoshuawuyts/exponential-backoff against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoshuawuyts%2Fexponential-backoff" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yoshuawuyts/exponential-backoff on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/yoshuawuyts/exponential-backoff
[INFO] finished tweaking git repo https://github.com/yoshuawuyts/exponential-backoff
[INFO] tweaked toml for git repo https://github.com/yoshuawuyts/exponential-backoff written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/yoshuawuyts/exponential-backoff already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] b1446a32928870064af77e0607a4b2f4db4872aa8f2f296aa704f0ccbc7779f2
[INFO] running `"docker" "start" "-a" "b1446a32928870064af77e0607a4b2f4db4872aa8f2f296aa704f0ccbc7779f2"`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling rand v0.5.3
[INFO] [stderr]    Compiling exponential-backoff v0.2.3-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.73s
[INFO] running `"docker" "inspect" "b1446a32928870064af77e0607a4b2f4db4872aa8f2f296aa704f0ccbc7779f2"`
[INFO] running `"docker" "rm" "-f" "b1446a32928870064af77e0607a4b2f4db4872aa8f2f296aa704f0ccbc7779f2"`
[INFO] [stdout] b1446a32928870064af77e0607a4b2f4db4872aa8f2f296aa704f0ccbc7779f2
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 51649018fa66e1ac5b7ff48fe5529e21d8f76f6965f625ab27c475d6f22c0f73
[INFO] running `"docker" "start" "-a" "51649018fa66e1ac5b7ff48fe5529e21d8f76f6965f625ab27c475d6f22c0f73"`
[INFO] [stderr]    Compiling exponential-backoff v0.2.3-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `"docker" "inspect" "51649018fa66e1ac5b7ff48fe5529e21d8f76f6965f625ab27c475d6f22c0f73"`
[INFO] running `"docker" "rm" "-f" "51649018fa66e1ac5b7ff48fe5529e21d8f76f6965f625ab27c475d6f22c0f73"`
[INFO] [stdout] 51649018fa66e1ac5b7ff48fe5529e21d8f76f6965f625ab27c475d6f22c0f73
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 2026db5f92c108c39248686f42c5c381c96a86fe4de6154c66d63d4db44ed29a
[INFO] running `"docker" "start" "-a" "2026db5f92c108c39248686f42c5c381c96a86fe4de6154c66d63d4db44ed29a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/exponential_backoff-8a04bef6150550e3
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test-5a9afa532d7005a3
[INFO] [stdout] test doesnt_crash ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests exponential-backoff
[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" "2026db5f92c108c39248686f42c5c381c96a86fe4de6154c66d63d4db44ed29a"`
[INFO] running `"docker" "rm" "-f" "2026db5f92c108c39248686f42c5c381c96a86fe4de6154c66d63d4db44ed29a"`
[INFO] [stdout] 2026db5f92c108c39248686f42c5c381c96a86fe4de6154c66d63d4db44ed29a