[INFO] fetching crate yubico_manager 0.8.0...
[INFO] checking yubico_manager-0.8.0 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate yubico_manager 0.8.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate yubico_manager 0.8.0 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yubico_manager 0.8.0
[INFO] finished tweaking crates.io crate yubico_manager 0.8.0
[INFO] tweaked toml for crates.io crate yubico_manager 0.8.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate yubico_manager 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded block-modes v0.5.0
[INFO] [stderr]   Downloaded proc-macro-hack-impl v0.4.2
[INFO] [stderr]   Downloaded hex v0.3.2
[INFO] [stderr]   Downloaded crypto-mac v0.8.0
[INFO] [stderr]   Downloaded sha-1 v0.9.2
[INFO] [stderr]   Downloaded block-cipher v0.7.1
[INFO] [stderr]   Downloaded aes-soft v0.4.0
[INFO] [stderr]   Downloaded structure-macro-impl v0.1.2
[INFO] [stderr]   Downloaded proc-macro-hack v0.4.2
[INFO] [stderr]   Downloaded hmac v0.8.1
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded structure v0.1.2
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5e6f197485f49a4f0a9d74b9a67c07c1188a3a73a4d90d34c4fabb6bc1dd52e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b5e6f197485f49a4f0a9d74b9a67c07c1188a3a73a4d90d34c4fabb6bc1dd52e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5e6f197485f49a4f0a9d74b9a67c07c1188a3a73a4d90d34c4fabb6bc1dd52e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5e6f197485f49a4f0a9d74b9a67c07c1188a3a73a4d90d34c4fabb6bc1dd52e", kill_on_drop: false }`
[INFO] [stdout] b5e6f197485f49a4f0a9d74b9a67c07c1188a3a73a4d90d34c4fabb6bc1dd52e
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 927483c13ab61e1a73c64bca4a0906b1bd1ee43ab1a225c6da195b9f69bde100
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "927483c13ab61e1a73c64bca4a0906b1bd1ee43ab1a225c6da195b9f69bde100", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling libflate_lz77 v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.2
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro-hack v0.4.2
[INFO] [stderr]    Compiling libflate v1.0.3
[INFO] [stderr]    Compiling structure-macro-impl v0.1.2
[INFO] [stderr]     Checking structure v0.1.2
[INFO] [stderr]    Compiling filetime v0.2.13
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]    Compiling tar v0.4.30
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-cipher v0.7.1
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking aes-soft v0.4.0
[INFO] [stderr]     Checking block-modes v0.5.0
[INFO] [stderr]     Checking sha-1 v0.9.2
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]    Compiling libusb1-sys v0.4.2
[INFO] [stderr]     Checking rusb v0.6.5
[INFO] [stderr]     Checking yubico_manager v0.8.0 (/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 27.71s
[INFO] running `Command { std: "docker" "inspect" "927483c13ab61e1a73c64bca4a0906b1bd1ee43ab1a225c6da195b9f69bde100", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "927483c13ab61e1a73c64bca4a0906b1bd1ee43ab1a225c6da195b9f69bde100", kill_on_drop: false }`
[INFO] [stdout] 927483c13ab61e1a73c64bca4a0906b1bd1ee43ab1a225c6da195b9f69bde100