[INFO] fetching crate kepler_backoff 0.1.0...
[INFO] testing kepler_backoff-0.1.0 against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] extracting crate kepler_backoff 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate kepler_backoff 0.1.0
[INFO] finished tweaking crates.io crate kepler_backoff 0.1.0
[INFO] tweaked toml for crates.io crate kepler_backoff 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kepler_backoff 0.1.0 on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42f33d57bf276ff89ca28c8cb58c1f18fa5dbfb3194f6612d9166bd68bee1c51
[INFO] running `Command { std: "docker" "start" "-a" "42f33d57bf276ff89ca28c8cb58c1f18fa5dbfb3194f6612d9166bd68bee1c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42f33d57bf276ff89ca28c8cb58c1f18fa5dbfb3194f6612d9166bd68bee1c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42f33d57bf276ff89ca28c8cb58c1f18fa5dbfb3194f6612d9166bd68bee1c51", kill_on_drop: false }`
[INFO] [stdout] 42f33d57bf276ff89ca28c8cb58c1f18fa5dbfb3194f6612d9166bd68bee1c51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a66cd7a144e23bc04a0fc4fb53ba25505fd48076859347081dc3f0997bd1396
[INFO] running `Command { std: "docker" "start" "-a" "5a66cd7a144e23bc04a0fc4fb53ba25505fd48076859347081dc3f0997bd1396", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.179
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling kepler_backoff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.97s
[INFO] running `Command { std: "docker" "inspect" "5a66cd7a144e23bc04a0fc4fb53ba25505fd48076859347081dc3f0997bd1396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a66cd7a144e23bc04a0fc4fb53ba25505fd48076859347081dc3f0997bd1396", kill_on_drop: false }`
[INFO] [stdout] 5a66cd7a144e23bc04a0fc4fb53ba25505fd48076859347081dc3f0997bd1396
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9735a27500a9d5ac1fc0b6d94319ca895a9a796f99d7f46188e6388177d1290
[INFO] running `Command { std: "docker" "start" "-a" "d9735a27500a9d5ac1fc0b6d94319ca895a9a796f99d7f46188e6388177d1290", kill_on_drop: false }`
[INFO] [stderr]    Compiling kepler_backoff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "d9735a27500a9d5ac1fc0b6d94319ca895a9a796f99d7f46188e6388177d1290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9735a27500a9d5ac1fc0b6d94319ca895a9a796f99d7f46188e6388177d1290", kill_on_drop: false }`
[INFO] [stdout] d9735a27500a9d5ac1fc0b6d94319ca895a9a796f99d7f46188e6388177d1290
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 20fb46b9248c92b772b65b24cfbe79f74144d44ee94196d0ea13ab35a22d8e78
[INFO] running `Command { std: "docker" "start" "-a" "20fb46b9248c92b772b65b24cfbe79f74144d44ee94196d0ea13ab35a22d8e78", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/kepler_backoff-e22cdd77a3b0f749)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test backoff_tests::backoff_duration_increases_with_attempt_count ... ok
[INFO] [stdout] test backoff_tests::backoff_duration_can_be_jittered ... ok
[INFO] [stdout] test backoff_tests::backoff_duration_is_capped_at_max_duration ... ok
[INFO] [stdout] test backoff_tests::backoff_reset_can_be_reseted ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kepler_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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "20fb46b9248c92b772b65b24cfbe79f74144d44ee94196d0ea13ab35a22d8e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20fb46b9248c92b772b65b24cfbe79f74144d44ee94196d0ea13ab35a22d8e78", kill_on_drop: false }`
[INFO] [stdout] 20fb46b9248c92b772b65b24cfbe79f74144d44ee94196d0ea13ab35a22d8e78