[INFO] fetching crate dear 0.1.1...
[INFO] checking dear-0.1.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate dear 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate dear 0.1.1
[INFO] finished tweaking crates.io crate dear 0.1.1
[INFO] tweaked toml for crates.io crate dear 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dear 0.1.1 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 dear 0.1.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 50f8dc62cdaf8e7e7e220d05a4b1cbb72ca46008f90399a9ddb2f35650e05590
[INFO] running `Command { std: "docker" "start" "-a" "50f8dc62cdaf8e7e7e220d05a4b1cbb72ca46008f90399a9ddb2f35650e05590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50f8dc62cdaf8e7e7e220d05a4b1cbb72ca46008f90399a9ddb2f35650e05590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50f8dc62cdaf8e7e7e220d05a4b1cbb72ca46008f90399a9ddb2f35650e05590", kill_on_drop: false }`
[INFO] [stdout] 50f8dc62cdaf8e7e7e220d05a4b1cbb72ca46008f90399a9ddb2f35650e05590
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0d8b201143d77de9cfb717b485e4f7cbc73464db8eeb019f897481bda0109edd
[INFO] running `Command { std: "docker" "start" "-a" "0d8b201143d77de9cfb717b485e4f7cbc73464db8eeb019f897481bda0109edd", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking owo-colors v3.4.0
[INFO] [stderr]     Checking clap_lex v0.1.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling unicode-linebreak v0.1.2
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking clap v3.1.9
[INFO] [stderr]     Checking dear v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this type continue be must used: Result<Box<dyn Iterator<Item = Note>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let _res = repo.list();
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mustuse_in_always_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Note, Infallible>
[INFO] [stdout]   --> src/repository/in_memory.rs:19:66
[INFO] [stdout]    |
[INFO] [stdout] 19 |       fn insert(&mut self, note: Note) -> Result<Note, Infallible> {
[INFO] [stdout]    |  __________________________________________________________________^
[INFO] [stdout] 20 | |         self.notes.push(note.clone());
[INFO] [stdout] 21 | |         Ok(note)
[INFO] [stdout] 22 | |     }
[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<Note, Infallible>
[INFO] [stdout]   --> src/repository/in_memory.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Ok(note)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Box<dyn Iterator<Item = Note>>, Infallible>
[INFO] [stdout]   --> src/repository/in_memory.rs:24:61
[INFO] [stdout]    |
[INFO] [stdout] 24 |       fn list(&self) -> Result<NoteIterator<'_>, Self::Error> {
[INFO] [stdout]    |  _____________________________________________________________^
[INFO] [stdout] 25 | |         Ok(Box::new(self.notes.iter().cloned()))
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Box<dyn Iterator<Item = Note>>, Infallible>
[INFO] [stdout]   --> src/repository/in_memory.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         Ok(Box::new(self.notes.iter().cloned()))
[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/cli/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | /         #[clap(long)]
[INFO] [stdout] 14 | |         title: 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/cli/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         #[clap(long, short)]
[INFO] [stdout] 17 | |         description: Option<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/cli/mod.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | /         #[clap(long, short, multiple_occurrences(true))]
[INFO] [stdout] 20 | |         tags: Option<Vec<String>>,
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dear` (lib) due to 5 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: this type continue be must used: Result<Box<dyn Iterator<Item = note::Note>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let _res = repo.list();
[INFO] [stdout]    |                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mustuse_in_always_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<note::Note, Infallible>
[INFO] [stdout]   --> src/core/list_notes.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         repo.insert(first_note).unwrap();
[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<note::Note, Infallible>
[INFO] [stdout]   --> src/core/list_notes.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         repo.insert(second_note).unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<note::Note, Infallible>
[INFO] [stdout]   --> src/core/list_notes.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         repo.insert(third_note).unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Box<dyn Iterator<Item = note::Note>>, Infallible>
[INFO] [stdout]   --> src/core/list_notes.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let res = repo.list().unwrap().collect::<Vec<_>>();
[INFO] [stdout]    |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<note::Note, Infallible>
[INFO] [stdout]   --> src/repository/in_memory.rs:19:66
[INFO] [stdout]    |
[INFO] [stdout] 19 |       fn insert(&mut self, note: Note) -> Result<Note, Infallible> {
[INFO] [stdout]    |  __________________________________________________________________^
[INFO] [stdout] 20 | |         self.notes.push(note.clone());
[INFO] [stdout] 21 | |         Ok(note)
[INFO] [stdout] 22 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<note::Note, Infallible>
[INFO] [stdout]   --> src/repository/in_memory.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Ok(note)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Box<dyn Iterator<Item = note::Note>>, Infallible>
[INFO] [stdout]   --> src/repository/in_memory.rs:24:61
[INFO] [stdout]    |
[INFO] [stdout] 24 |       fn list(&self) -> Result<NoteIterator<'_>, Self::Error> {
[INFO] [stdout]    |  _____________________________________________________________^
[INFO] [stdout] 25 | |         Ok(Box::new(self.notes.iter().cloned()))
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Box<dyn Iterator<Item = note::Note>>, Infallible>
[INFO] [stdout]   --> src/repository/in_memory.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         Ok(Box::new(self.notes.iter().cloned()))
[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/cli/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | /         #[clap(long)]
[INFO] [stdout] 14 | |         title: 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/cli/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         #[clap(long, short)]
[INFO] [stdout] 17 | |         description: Option<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/cli/mod.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | /         #[clap(long, short, multiple_occurrences(true))]
[INFO] [stdout] 20 | |         tags: Option<Vec<String>>,
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dear` (lib test) due to 8 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0d8b201143d77de9cfb717b485e4f7cbc73464db8eeb019f897481bda0109edd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d8b201143d77de9cfb717b485e4f7cbc73464db8eeb019f897481bda0109edd", kill_on_drop: false }`
[INFO] [stdout] 0d8b201143d77de9cfb717b485e4f7cbc73464db8eeb019f897481bda0109edd
