[INFO] fetching crate gredit 0.0.3...
[INFO] checking gredit-0.0.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate gredit 0.0.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate gredit 0.0.3
[INFO] finished tweaking crates.io crate gredit 0.0.3
[INFO] tweaked toml for crates.io crate gredit 0.0.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gredit 0.0.3 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 gredit 0.0.3 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] 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] 28213b390ecb1c6ef5ebee8d4d2050362603f005d53695f1a0b113a732739071
[INFO] running `Command { std: "docker" "start" "-a" "28213b390ecb1c6ef5ebee8d4d2050362603f005d53695f1a0b113a732739071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28213b390ecb1c6ef5ebee8d4d2050362603f005d53695f1a0b113a732739071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28213b390ecb1c6ef5ebee8d4d2050362603f005d53695f1a0b113a732739071", kill_on_drop: false }`
[INFO] [stdout] 28213b390ecb1c6ef5ebee8d4d2050362603f005d53695f1a0b113a732739071
[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] 770bc60b371c649b1a6fa5467f19be4d377d6a7d25ca659f304d0efc62e6166c
[INFO] running `Command { std: "docker" "start" "-a" "770bc60b371c649b1a6fa5467f19be4d377d6a7d25ca659f304d0efc62e6166c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking bstr v0.2.11
[INFO] [stderr]     Checking grep-matcher v0.1.5
[INFO] [stderr]     Checking memmap2 v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking time v0.3.13
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking predicates-tree v1.0.5
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking crossterm v0.23.0
[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking fragile v1.1.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling onig_sys v69.8.1
[INFO] [stderr]     Checking grep-searcher v0.1.8
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking tui v0.17.0
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking grep-regex v0.1.9
[INFO] [stderr]     Checking predicates v2.1.1
[INFO] [stderr]     Checking grep-cli v0.1.6
[INFO] [stderr]     Checking ignore v0.4.18
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]    Compiling mockall_double v0.2.1
[INFO] [stderr]    Compiling mockall_derive v0.11.0
[INFO] [stderr]    Compiling test-case v2.0.0
[INFO] [stderr]     Checking onig v6.3.2
[INFO] [stderr]     Checking thiserror v1.0.32
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking strum v0.24.0
[INFO] [stderr]     Checking mockall v0.11.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking plist v1.3.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking grep-printer v0.1.6
[INFO] [stderr]     Checking syntect v5.0.0
[INFO] [stderr]     Checking grep v0.2.8
[INFO] [stderr]     Checking gredit v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     /// Regular expression used for searching.
[INFO] [stdout] 24 | |     pub pattern: Option<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<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | /     /// File or directory to search. Directories are searched recursively.
[INFO] [stdout] 26 | |     /// If not specified, searching starts from current directory.
[INFO] [stdout] 27 | |     pub path: Option<PathBuf>,
[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/args.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     /// Include files and directories for searching that match the given glob.
[INFO] [stdout] 45 | |     /// Multiple globs may be provided.
[INFO] [stdout] 46 | |     #[clap(short, long)]
[INFO] [stdout] 47 | |     pub glob: Vec<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/args.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | /     /// Only search files matching TYPE. Multiple types may be provided.
[INFO] [stdout] 52 | |     #[clap(short = 't', long = "type")]
[INFO] [stdout] 53 | |     pub type_matching: Vec<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/args.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | /     /// Do not search files matching TYPE-NOT. Multiple types-not may be provided.
[INFO] [stdout] 55 | |     #[clap(short = 'T', long)]
[INFO] [stdout] 56 | |     pub type_not: Vec<String>,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ui/result_list.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn iter(&self) -> std::slice::Iter<EntryType> {
[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] 75 |     pub fn iter(&self) -> std::slice::Iter<'_, EntryType> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gredit` (bin "gredit") due to 5 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     /// Regular expression used for searching.
[INFO] [stdout] 24 | |     pub pattern: Option<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: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | /     /// File or directory to search. Directories are searched recursively.
[INFO] [stdout] 26 | |     /// If not specified, searching starts from current directory.
[INFO] [stdout] 27 | |     pub path: Option<PathBuf>,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | /     /// Include files and directories for searching that match the given glob.
[INFO] [stdout] 45 | |     /// Multiple globs may be provided.
[INFO] [stdout] 46 | |     #[clap(short, long)]
[INFO] [stdout] 47 | |     pub glob: Vec<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | /     /// Only search files matching TYPE. Multiple types may be provided.
[INFO] [stdout] 52 | |     #[clap(short = 't', long = "type")]
[INFO] [stdout] 53 | |     pub type_matching: Vec<String>,
[INFO] [stdout]    | |__________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | /     /// Do not search files matching TYPE-NOT. Multiple types-not may be provided.
[INFO] [stdout] 55 | |     #[clap(short = 'T', long)]
[INFO] [stdout] 56 | |     pub type_not: Vec<String>,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/ui/result_list.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn iter(&self) -> std::slice::Iter<EntryType> {
[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] 75 |     pub fn iter(&self) -> std::slice::Iter<'_, EntryType> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gredit` (bin "gredit" test) due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "770bc60b371c649b1a6fa5467f19be4d377d6a7d25ca659f304d0efc62e6166c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "770bc60b371c649b1a6fa5467f19be4d377d6a7d25ca659f304d0efc62e6166c", kill_on_drop: false }`
[INFO] [stdout] 770bc60b371c649b1a6fa5467f19be4d377d6a7d25ca659f304d0efc62e6166c
