[INFO] fetching crate backoff 0.4.0...
[INFO] checking backoff-0.4.0 against master#e652caa679a304af11fc04f1f12452f255a82593 for pr-98000
[INFO] extracting crate backoff 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate backoff 0.4.0 on toolchain e652caa679a304af11fc04f1f12452f255a82593
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backoff 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate backoff 0.4.0
[INFO] tweaked toml for crates.io crate backoff 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate backoff 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.70
[INFO] [stderr]   Downloaded quote v1.0.8
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.70
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.70
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.70
[INFO] [stderr]   Downloaded serde_json v1.0.61
[INFO] [stderr]   Downloaded redox_syscall v0.2.4
[INFO] [stderr]   Downloaded rand_core v0.6.1
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[INFO] [stderr]   Downloaded pin-project-internal v0.4.27
[INFO] [stderr]   Downloaded value-bag v1.0.0-alpha.6
[INFO] [stderr]   Downloaded tracing-futures v0.2.4
[INFO] [stderr]   Downloaded http-body v0.4.0
[INFO] [stderr]   Downloaded h2 v0.3.0
[INFO] [stderr]   Downloaded http v0.2.3
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[INFO] [stderr]   Downloaded ctor v0.1.18
[INFO] [stderr]   Downloaded js-sys v0.3.47
[INFO] [stderr]   Downloaded indexmap v1.6.1
[INFO] [stderr]   Downloaded futures-lite v1.11.3
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.70
[INFO] [stderr]   Downloaded pin-project v0.4.27
[INFO] [stderr]   Downloaded async-io v1.3.1
[INFO] [stderr]   Downloaded tracing-core v0.1.17
[INFO] [stderr]   Downloaded reqwest v0.11.0
[INFO] [stderr]   Downloaded pin-project-internal v1.0.4
[INFO] [stderr]   Downloaded tokio-macros v1.0.0
[INFO] [stderr]   Downloaded unicode-normalization v0.1.16
[INFO] [stderr]   Downloaded web-sys v0.3.47
[INFO] [stderr]   Downloaded tracing v0.1.22
[INFO] [stderr]   Downloaded tokio v1.1.1
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.20
[INFO] [stderr]   Downloaded encoding_rs v0.8.26
[INFO] [stderr]   Downloaded libc v0.2.84
[INFO] [stderr]   Downloaded serde v1.0.123
[INFO] [stderr]   Downloaded bumpalo v3.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3f05c4e1508d6940eea3191e30dda56451e2f867a59ca5d7486e77e825dd8b0
[INFO] running `Command { std: "docker" "start" "-a" "c3f05c4e1508d6940eea3191e30dda56451e2f867a59ca5d7486e77e825dd8b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3f05c4e1508d6940eea3191e30dda56451e2f867a59ca5d7486e77e825dd8b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3f05c4e1508d6940eea3191e30dda56451e2f867a59ca5d7486e77e825dd8b0", kill_on_drop: false }`
[INFO] [stdout] c3f05c4e1508d6940eea3191e30dda56451e2f867a59ca5d7486e77e825dd8b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e0cb5f7474d12e7342b227f2f8f5594c7bf946ca455de2a36911fe1aacf905a
[INFO] running `Command { std: "docker" "start" "-a" "2e0cb5f7474d12e7342b227f2f8f5594c7bf946ca455de2a36911fe1aacf905a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.84
[INFO] [stderr]    Compiling autocfg v1.0.1
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[INFO] [stderr]    Compiling memchr v2.3.4
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[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking bytes v1.0.1
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[INFO] [stderr]     Checking foreign-types v0.3.2
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[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking unicode-normalization v0.1.16
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[INFO] [stderr]     Checking backoff v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]    Compiling ctor v0.1.18
[INFO] [stderr]    Compiling tokio-macros v1.0.0
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[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking mio v0.7.7
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[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.57s
[INFO] running `Command { std: "docker" "inspect" "2e0cb5f7474d12e7342b227f2f8f5594c7bf946ca455de2a36911fe1aacf905a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0cb5f7474d12e7342b227f2f8f5594c7bf946ca455de2a36911fe1aacf905a", kill_on_drop: false }`
[INFO] [stdout] 2e0cb5f7474d12e7342b227f2f8f5594c7bf946ca455de2a36911fe1aacf905a