[INFO] fetching crate vote-counter 0.2.1...
[INFO] checking vote-counter-0.2.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate vote-counter 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate vote-counter 0.2.1
[INFO] finished tweaking crates.io crate vote-counter 0.2.1
[INFO] tweaked toml for crates.io crate vote-counter 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vote-counter 0.2.1 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 vote-counter 0.2.1 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] acdd2e418772d0fad3c5e63c2d912bd088dd9d64e3745edaba2882ce985122d6
[INFO] running `Command { std: "docker" "start" "-a" "acdd2e418772d0fad3c5e63c2d912bd088dd9d64e3745edaba2882ce985122d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acdd2e418772d0fad3c5e63c2d912bd088dd9d64e3745edaba2882ce985122d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acdd2e418772d0fad3c5e63c2d912bd088dd9d64e3745edaba2882ce985122d6", kill_on_drop: false }`
[INFO] [stdout] acdd2e418772d0fad3c5e63c2d912bd088dd9d64e3745edaba2882ce985122d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 880652c7d7ec58dab1a5cc75471cd874679bda867617336ae94a8c7b74f3ff1e
[INFO] running `Command { std: "docker" "start" "-a" "880652c7d7ec58dab1a5cc75471cd874679bda867617336ae94a8c7b74f3ff1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]    Compiling indexmap v1.9.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking clap_lex v0.2.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]    Compiling clap_derive v3.2.5
[INFO] [stderr]     Checking clap v3.2.5
[INFO] [stderr]     Checking vote-counter v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     path : path::PathBuf,
[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<std::string::String, Infallible>
[INFO] [stdout]   --> src/ballot_box.rs:74:22
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .map(|x| (*x).parse::<String>())
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ballot_box.rs:75:22
[INFO] [stdout]    |
[INFO] [stdout] 75 |             .map(|x| x.unwrap())
[INFO] [stdout]    |                      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<f64, Infallible>
[INFO] [stdout]    --> src/ballot_box.rs:213:39
[INFO] [stdout]     |
[INFO] [stdout] 213 |         else if winners.len() == 1 && f64::try_from(max).unwrap() >= (threshold * f64::try_from(self.total_votes).unwrap()) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<f64, Infallible>
[INFO] [stdout]    --> src/ballot_box.rs:213:83
[INFO] [stdout]     |
[INFO] [stdout] 213 |         else if winners.len() == 1 && f64::try_from(max).unwrap() >= (threshold * f64::try_from(self.total_votes).unwrap()) {
[INFO] [stdout]     |                                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vote-counter` (bin "vote-counter") due to 5 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<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     path : path::PathBuf,
[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<std::string::String, Infallible>
[INFO] [stdout]   --> src/ballot_box.rs:74:22
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .map(|x| (*x).parse::<String>())
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ballot_box.rs:75:22
[INFO] [stdout]    |
[INFO] [stdout] 75 |             .map(|x| x.unwrap())
[INFO] [stdout]    |                      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<f64, Infallible>
[INFO] [stdout]    --> src/ballot_box.rs:213:39
[INFO] [stdout]     |
[INFO] [stdout] 213 |         else if winners.len() == 1 && f64::try_from(max).unwrap() >= (threshold * f64::try_from(self.total_votes).unwrap()) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<f64, Infallible>
[INFO] [stdout]    --> src/ballot_box.rs:213:83
[INFO] [stdout]     |
[INFO] [stdout] 213 |         else if winners.len() == 1 && f64::try_from(max).unwrap() >= (threshold * f64::try_from(self.total_votes).unwrap()) {
[INFO] [stdout]     |                                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vote-counter` (bin "vote-counter" test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "880652c7d7ec58dab1a5cc75471cd874679bda867617336ae94a8c7b74f3ff1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "880652c7d7ec58dab1a5cc75471cd874679bda867617336ae94a8c7b74f3ff1e", kill_on_drop: false }`
[INFO] [stdout] 880652c7d7ec58dab1a5cc75471cd874679bda867617336ae94a8c7b74f3ff1e
