[INFO] fetching crate yubico_manager 0.8.2...
[INFO] checking yubico_manager-0.8.2 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate yubico_manager 0.8.2 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate yubico_manager 0.8.2 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yubico_manager 0.8.2
[INFO] finished tweaking crates.io crate yubico_manager 0.8.2
[INFO] tweaked toml for crates.io crate yubico_manager 0.8.2 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate crates.io crate yubico_manager 0.8.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structure-macro-impl v0.1.2
[INFO] [stderr]   Downloaded block-modes v0.5.0
[INFO] [stderr]   Downloaded block-cipher v0.7.1
[INFO] [stderr]   Downloaded libflate_lz77 v1.1.0
[INFO] [stderr]   Downloaded structure v0.1.2
[INFO] [stderr]   Downloaded rusb v0.6.5
[INFO] [stderr]   Downloaded libflate v1.1.0
[INFO] [stderr]   Downloaded libusb1-sys v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9def0fac7b76932cbc85b66fd98aafb303d3deb15a6337a14b90fc79fd6f767
[INFO] running `Command { std: "docker" "start" "-a" "f9def0fac7b76932cbc85b66fd98aafb303d3deb15a6337a14b90fc79fd6f767", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9def0fac7b76932cbc85b66fd98aafb303d3deb15a6337a14b90fc79fd6f767", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9def0fac7b76932cbc85b66fd98aafb303d3deb15a6337a14b90fc79fd6f767", kill_on_drop: false }`
[INFO] [stdout] f9def0fac7b76932cbc85b66fd98aafb303d3deb15a6337a14b90fc79fd6f767
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f35a0bed7eb7edf7f786f75e4083730f1883cbd944f4c54e5cfa00a58ba132d
[INFO] running `Command { std: "docker" "start" "-a" "4f35a0bed7eb7edf7f786f75e4083730f1883cbd944f4c54e5cfa00a58ba132d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.3
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking cpufeatures v0.1.5
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling libflate_lz77 v1.1.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling libflate v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.4.3
[INFO] [stderr]    Compiling structure-macro-impl v0.1.2
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking structure v0.1.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling tar v0.4.35
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking block-cipher v0.7.1
[INFO] [stderr]     Checking cipher v0.3.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking block-modes v0.5.0
[INFO] [stderr]     Checking sha-1 v0.9.7
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking aes v0.7.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling libusb1-sys v0.4.4
[INFO] [stderr]     Checking rusb v0.6.5
[INFO] [stderr]     Checking yubico_manager v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/configuration_hmac.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut rng = thread_rng();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.77s
[INFO] running `Command { std: "docker" "inspect" "4f35a0bed7eb7edf7f786f75e4083730f1883cbd944f4c54e5cfa00a58ba132d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f35a0bed7eb7edf7f786f75e4083730f1883cbd944f4c54e5cfa00a58ba132d", kill_on_drop: false }`
[INFO] [stdout] 4f35a0bed7eb7edf7f786f75e4083730f1883cbd944f4c54e5cfa00a58ba132d