[INFO] cloning repository https://github.com/erik/fnr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erik/fnr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferik%2Ffnr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferik%2Ffnr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 280c5b12747223fa024ef23ebcbc59f2d6c711e8
[INFO] checking erik/fnr against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferik%2Ffnr" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/erik/fnr
[INFO] finished tweaking git repo https://github.com/erik/fnr
[INFO] tweaked toml for git repo https://github.com/erik/fnr written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/erik/fnr 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 git repo https://github.com/erik/fnr 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-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] d3201653bfe5deb3d09460d55a58ffffb210facb6704305a005dc46c5165f4f4
[INFO] running `Command { std: "docker" "start" "-a" "d3201653bfe5deb3d09460d55a58ffffb210facb6704305a005dc46c5165f4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3201653bfe5deb3d09460d55a58ffffb210facb6704305a005dc46c5165f4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3201653bfe5deb3d09460d55a58ffffb210facb6704305a005dc46c5165f4f4", kill_on_drop: false }`
[INFO] [stdout] d3201653bfe5deb3d09460d55a58ffffb210facb6704305a005dc46c5165f4f4
[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] 14ec033554bf724100063b69d744d92d59cd41e2079dbe525e82c00df8233c31
[INFO] running `Command { std: "docker" "start" "-a" "14ec033554bf724100063b69d744d92d59cd41e2079dbe525e82c00df8233c31", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling encoding_rs v0.8.29
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking grep-matcher v0.1.5
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking termtree v0.2.3
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking text_io v0.1.9
[INFO] [stderr]     Checking predicates-tree v1.0.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking memmap2 v0.3.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking grep-regex v0.1.9
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking predicates v2.1.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking assert_cmd v1.0.8
[INFO] [stderr]     Checking grep-cli v0.1.6
[INFO] [stderr]     Checking ignore v0.4.18
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking grep-searcher v0.1.8
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.5
[INFO] [stderr]     Checking clap v3.0.5
[INFO] [stderr]     Checking grep-printer v0.1.6
[INFO] [stderr]     Checking grep v0.2.8
[INFO] [stderr]     Checking fnr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/main.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn search_timer(&self) -> StatSearchTimer {
[INFO] [stdout]    |                     ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn search_timer(&self) -> StatSearchTimer<'_> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 | /     /// Include only files or directories matching pattern.
[INFO] [stdout] 231 | |     #[clap(short = 'I', long)]
[INFO] [stdout] 232 | |     include: Option<Vec<String>>,
[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/main.rs:234:5
[INFO] [stdout]     |
[INFO] [stdout] 234 | /     /// Exclude files or directories matching pattern.
[INFO] [stdout] 235 | |     #[clap(short = 'E', long)]
[INFO] [stdout] 236 | |     exclude: Vec<String>,
[INFO] [stdout]     | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 246 | /     /// What to search for. Literal string or regular expression.
[INFO] [stdout] 247 | |     ///
[INFO] [stdout] 248 | |     /// For supported regular expression syntax, see:
[INFO] [stdout] 249 | |     /// https://docs.rs/regex/latest/regex/#syntax
[INFO] [stdout] 250 | |     #[clap(name = "FIND", required = true)]
[INFO] [stdout] 251 | |     find: String,
[INFO] [stdout]     | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:253:5
[INFO] [stdout]     |
[INFO] [stdout] 253 | /     /// What to replace it with.
[INFO] [stdout] 254 | |     ///
[INFO] [stdout] 255 | |     /// May contain numbered references to capture groups given in
[INFO] [stdout] 256 | |     /// FIND in the form $1, $2, etc.
[INFO] [stdout] 257 | |     #[clap(name = "REPLACE", required = true)]
[INFO] [stdout] 258 | |     replace: String,
[INFO] [stdout]     | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:287:16
[INFO] [stdout]     |
[INFO] [stdout] 287 |     fn pattern(&self) -> Cow<str> {
[INFO] [stdout]     |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                |
[INFO] [stdout]     |                the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 287 |     fn pattern(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:306:21
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn search_paths(&self) -> Result<Cow<[PathBuf]>> {
[INFO] [stdout]     |                     ^^^^^            ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn search_paths(&self) -> Result<Cow<'_, [PathBuf]>> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fnr` (bin "fnr") due to 4 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/main.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn search_timer(&self) -> StatSearchTimer {
[INFO] [stdout]    |                     ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn search_timer(&self) -> StatSearchTimer<'_> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 | /     /// Include only files or directories matching pattern.
[INFO] [stdout] 231 | |     #[clap(short = 'I', long)]
[INFO] [stdout] 232 | |     include: Option<Vec<String>>,
[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/main.rs:234:5
[INFO] [stdout]     |
[INFO] [stdout] 234 | /     /// Exclude files or directories matching pattern.
[INFO] [stdout] 235 | |     #[clap(short = 'E', long)]
[INFO] [stdout] 236 | |     exclude: Vec<String>,
[INFO] [stdout]     | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:246:5
[INFO] [stdout]     |
[INFO] [stdout] 246 | /     /// What to search for. Literal string or regular expression.
[INFO] [stdout] 247 | |     ///
[INFO] [stdout] 248 | |     /// For supported regular expression syntax, see:
[INFO] [stdout] 249 | |     /// https://docs.rs/regex/latest/regex/#syntax
[INFO] [stdout] 250 | |     #[clap(name = "FIND", required = true)]
[INFO] [stdout] 251 | |     find: String,
[INFO] [stdout]     | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:253:5
[INFO] [stdout]     |
[INFO] [stdout] 253 | /     /// What to replace it with.
[INFO] [stdout] 254 | |     ///
[INFO] [stdout] 255 | |     /// May contain numbered references to capture groups given in
[INFO] [stdout] 256 | |     /// FIND in the form $1, $2, etc.
[INFO] [stdout] 257 | |     #[clap(name = "REPLACE", required = true)]
[INFO] [stdout] 258 | |     replace: String,
[INFO] [stdout]     | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:287:16
[INFO] [stdout]     |
[INFO] [stdout] 287 |     fn pattern(&self) -> Cow<str> {
[INFO] [stdout]     |                ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                |
[INFO] [stdout]     |                the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 287 |     fn pattern(&self) -> Cow<'_, str> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:306:21
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn search_paths(&self) -> Result<Cow<[PathBuf]>> {
[INFO] [stdout]     |                     ^^^^^            ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn search_paths(&self) -> Result<Cow<'_, [PathBuf]>> {
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fnr` (bin "fnr" test) due to 4 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "14ec033554bf724100063b69d744d92d59cd41e2079dbe525e82c00df8233c31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ec033554bf724100063b69d744d92d59cd41e2079dbe525e82c00df8233c31", kill_on_drop: false }`
[INFO] [stdout] 14ec033554bf724100063b69d744d92d59cd41e2079dbe525e82c00df8233c31
