[INFO] fetching crate yubico_manager 0.8.1...
[INFO] testing yubico_manager-0.8.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate yubico_manager 0.8.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate yubico_manager 0.8.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yubico_manager 0.8.1
[INFO] finished tweaking crates.io crate yubico_manager 0.8.1
[INFO] tweaked toml for crates.io crate yubico_manager 0.8.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate yubico_manager 0.8.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9faca8daf0a03fa86b9de1fd187adcbaf6a2d36c25285a1b3720c392033c1d5
[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" "e9faca8daf0a03fa86b9de1fd187adcbaf6a2d36c25285a1b3720c392033c1d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9faca8daf0a03fa86b9de1fd187adcbaf6a2d36c25285a1b3720c392033c1d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9faca8daf0a03fa86b9de1fd187adcbaf6a2d36c25285a1b3720c392033c1d5", kill_on_drop: false }`
[INFO] [stdout] e9faca8daf0a03fa86b9de1fd187adcbaf6a2d36c25285a1b3720c392033c1d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7ec27efbdcc7b08123948bc77f0a6ba095e28e98b243a4c58aba9e40851435c
[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" "b7ec27efbdcc7b08123948bc77f0a6ba095e28e98b243a4c58aba9e40851435c", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling libflate_lz77 v1.0.0
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.2
[INFO] [stderr]    Compiling subtle v2.4.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling filetime v0.2.13
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling block-cipher v0.7.1
[INFO] [stderr]    Compiling sha-1 v0.9.2
[INFO] [stderr]    Compiling aes-soft v0.4.0
[INFO] [stderr]    Compiling block-modes v0.5.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling tar v0.4.30
[INFO] [stderr]    Compiling hmac v0.8.1
[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]    Compiling structure v0.1.2
[INFO] [stderr]    Compiling libusb1-sys v0.4.3
[INFO] [stderr]    Compiling rusb v0.6.5
[INFO] [stderr]    Compiling yubico_manager v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.20s
[INFO] running `Command { std: "docker" "inspect" "b7ec27efbdcc7b08123948bc77f0a6ba095e28e98b243a4c58aba9e40851435c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7ec27efbdcc7b08123948bc77f0a6ba095e28e98b243a4c58aba9e40851435c", kill_on_drop: false }`
[INFO] [stdout] b7ec27efbdcc7b08123948bc77f0a6ba095e28e98b243a4c58aba9e40851435c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2100cd4ed0ca020ea58a086f9633948fbc236f6609a3716090282c39e1e3dda0
[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" "2100cd4ed0ca020ea58a086f9633948fbc236f6609a3716090282c39e1e3dda0", kill_on_drop: false }`
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling yubico_manager v0.8.1 (/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 test [unoptimized + debuginfo] target(s) in 5.62s
[INFO] running `Command { std: "docker" "inspect" "2100cd4ed0ca020ea58a086f9633948fbc236f6609a3716090282c39e1e3dda0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2100cd4ed0ca020ea58a086f9633948fbc236f6609a3716090282c39e1e3dda0", kill_on_drop: false }`
[INFO] [stdout] 2100cd4ed0ca020ea58a086f9633948fbc236f6609a3716090282c39e1e3dda0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9a87bf05bef37cdeed488a4145aaad24a3fa7f29500b56aa285bd0af5bf6cf4a
[INFO] running `Command { std: "docker" "start" "-a" "9a87bf05bef37cdeed488a4145aaad24a3fa7f29500b56aa285bd0af5bf6cf4a", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/configuration_hmac.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let mut rng = thread_rng();
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/yubico_manager-1858372621425870
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests yubico_manager
[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 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9a87bf05bef37cdeed488a4145aaad24a3fa7f29500b56aa285bd0af5bf6cf4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a87bf05bef37cdeed488a4145aaad24a3fa7f29500b56aa285bd0af5bf6cf4a", kill_on_drop: false }`
[INFO] [stdout] 9a87bf05bef37cdeed488a4145aaad24a3fa7f29500b56aa285bd0af5bf6cf4a