[INFO] fetching crate rhuffle 0.3.3...
[INFO] checking rhuffle-0.3.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rhuffle 0.3.3 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate rhuffle 0.3.3
[INFO] finished tweaking crates.io crate rhuffle 0.3.3
[INFO] tweaked toml for crates.io crate rhuffle 0.3.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rhuffle 0.3.3 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rhuffle 0.3.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 399e55fd686d999ce3d2f83ee0420acc22d8de96e60d408de998fcb8b82ab436
[INFO] running `Command { std: "docker" "start" "-a" "399e55fd686d999ce3d2f83ee0420acc22d8de96e60d408de998fcb8b82ab436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "399e55fd686d999ce3d2f83ee0420acc22d8de96e60d408de998fcb8b82ab436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "399e55fd686d999ce3d2f83ee0420acc22d8de96e60d408de998fcb8b82ab436", kill_on_drop: false }`
[INFO] [stdout] 399e55fd686d999ce3d2f83ee0420acc22d8de96e60d408de998fcb8b82ab436
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92e4daa7a3f7878fe3fb7c3086cc8a9acb931f5cbb12a1c33c76130fc6b44897
[INFO] running `Command { std: "docker" "start" "-a" "92e4daa7a3f7878fe3fb7c3086cc8a9acb931f5cbb12a1c33c76130fc6b44897", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]    Compiling rhuffle v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/config.rs:82:32
[INFO] [stdout]    |
[INFO] [stdout] 82 |             config.log_level = log_level.parse().expect(&parse_failed("log_level", log_level));
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/config.rs:85:49
[INFO] [stdout]    |
[INFO] [stdout] 85 |             config.source = Some(source.map(|x| x.parse().unwrap()).collect());
[INFO] [stdout]    |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/config.rs:88:39
[INFO] [stdout]    |
[INFO] [stdout] 88 |             config.destination = Some(destination.parse().expect(&parse_failed("destination", destination)));
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/config.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |             config.tmp = Some(tmp.parse().expect(&parse_failed("tmp", tmp)));
[INFO] [stdout]     |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rhuffle` (bin "rhuffle") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/config.rs:82:32
[INFO] [stdout]    |
[INFO] [stdout] 82 |             config.log_level = log_level.parse().expect(&parse_failed("log_level", log_level));
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/config.rs:85:49
[INFO] [stdout]    |
[INFO] [stdout] 85 |             config.source = Some(source.map(|x| x.parse().unwrap()).collect());
[INFO] [stdout]    |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/config.rs:88:39
[INFO] [stdout]    |
[INFO] [stdout] 88 |             config.destination = Some(destination.parse().expect(&parse_failed("destination", destination)));
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/config.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |             config.tmp = Some(tmp.parse().expect(&parse_failed("tmp", tmp)));
[INFO] [stdout]     |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rhuffle` (bin "rhuffle" test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "92e4daa7a3f7878fe3fb7c3086cc8a9acb931f5cbb12a1c33c76130fc6b44897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92e4daa7a3f7878fe3fb7c3086cc8a9acb931f5cbb12a1c33c76130fc6b44897", kill_on_drop: false }`
[INFO] [stdout] 92e4daa7a3f7878fe3fb7c3086cc8a9acb931f5cbb12a1c33c76130fc6b44897