[INFO] fetching crate pwgen 0.1.3...
[INFO] checking pwgen-0.1.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate pwgen 0.1.3 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate pwgen 0.1.3
[INFO] finished tweaking crates.io crate pwgen 0.1.3
[INFO] tweaked toml for crates.io crate pwgen 0.1.3 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pwgen 0.1.3 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 pwgen 0.1.3 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4e046005d2e86ed113efc6de49ca22ca80ac7ac354a3325b73d68d4803de44e7
[INFO] running `Command { std: "docker" "start" "-a" "4e046005d2e86ed113efc6de49ca22ca80ac7ac354a3325b73d68d4803de44e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e046005d2e86ed113efc6de49ca22ca80ac7ac354a3325b73d68d4803de44e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e046005d2e86ed113efc6de49ca22ca80ac7ac354a3325b73d68d4803de44e7", kill_on_drop: false }`
[INFO] [stdout] 4e046005d2e86ed113efc6de49ca22ca80ac7ac354a3325b73d68d4803de44e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b59b168aacea0707ec140fe3bfe137fe4fd6d623bfac2cf467d0d1df02dd403f
[INFO] running `Command { std: "docker" "start" "-a" "b59b168aacea0707ec140fe3bfe137fe4fd6d623bfac2cf467d0d1df02dd403f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling semver v1.0.13
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]     Checking num-traits v0.2.15
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking crc32fast v1.3.2
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]     Checking slab v0.4.7
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking bytemuck v1.12.1
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling rstest_macros v0.14.0
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking nix v0.22.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking gethostname v0.2.3
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking x11rb v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.34
[INFO] [stderr]    Compiling futures-macro v0.3.24
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking thiserror v1.0.34
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking arboard v2.1.1
[INFO] [stderr]     Checking pwgen v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<char, Infallible>
[INFO] [stdout]  --> src/lib.rs:8:43
[INFO] [stdout]   |
[INFO] [stdout] 8 |         .filter_map(|_| -> Option<char> { rng.sample(Alphanumeric).try_into().ok() })
[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<char, Infallible>
[INFO] [stdout]   --> src/lib.rs:17:43
[INFO] [stdout]    |
[INFO] [stdout] 17 |         .filter_map(|_| -> Option<char> { rng.gen_range(b'0'..=b'9').try_into().ok() })
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<char, Infallible>
[INFO] [stdout]   --> src/lib.rs:26:43
[INFO] [stdout]    |
[INFO] [stdout] 26 |         .filter_map(|_| -> Option<char> { rng.gen_range(b'!'..=b'~').try_into().ok() })
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pwgen` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b59b168aacea0707ec140fe3bfe137fe4fd6d623bfac2cf467d0d1df02dd403f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b59b168aacea0707ec140fe3bfe137fe4fd6d623bfac2cf467d0d1df02dd403f", kill_on_drop: false }`
[INFO] [stdout] b59b168aacea0707ec140fe3bfe137fe4fd6d623bfac2cf467d0d1df02dd403f
