[INFO] fetching crate mpart-async 0.7.0...
[INFO] checking mpart-async-0.7.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mpart-async 0.7.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mpart-async 0.7.0
[INFO] finished tweaking crates.io crate mpart-async 0.7.0
[INFO] tweaked toml for crates.io crate mpart-async 0.7.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mpart-async 0.7.0 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 mpart-async 0.7.0 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c25c7cd2ea87abc111fc3b4cca99120c5de64dd3e6aa4e5102ba086438aa526a
[INFO] running `Command { std: "docker" "start" "-a" "c25c7cd2ea87abc111fc3b4cca99120c5de64dd3e6aa4e5102ba086438aa526a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c25c7cd2ea87abc111fc3b4cca99120c5de64dd3e6aa4e5102ba086438aa526a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c25c7cd2ea87abc111fc3b4cca99120c5de64dd3e6aa4e5102ba086438aa526a", kill_on_drop: false }`
[INFO] [stdout] c25c7cd2ea87abc111fc3b4cca99120c5de64dd3e6aa4e5102ba086438aa526a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 62fd17330434f8d1135481314f9ebd07f2ca33e198c657f09595b0906f4f08ad
[INFO] running `Command { std: "docker" "start" "-a" "62fd17330434f8d1135481314f9ebd07f2ca33e198c657f09595b0906f4f08ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]     Checking http v0.2.11
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]    Compiling rustix v0.38.30
[INFO] [stderr]    Compiling multer v2.1.0
[INFO] [stderr]     Checking clap_lex v0.6.0
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]     Checking ciborium-io v0.2.1
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking data-encoding v2.5.0
[INFO] [stderr]     Checking ciborium-ll v0.2.1
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking clap_builder v4.4.18
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]     Checking http v1.0.0
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[INFO] [stderr]     Checking plotters-svg v0.3.5
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[INFO] [stderr]     Checking headers v0.3.9
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking is-terminal v0.4.10
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking clap v4.4.18
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking thiserror v1.0.56
[INFO] [stderr]     Checking tungstenite v0.20.1
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-tungstenite v0.20.1
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking ciborium v0.2.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking h2 v0.3.24
[INFO] [stderr]     Checking mpart-async v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/server.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn filename(&self) -> Result<Cow<str>, MultipartError> {
[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] 62 |     pub fn filename(&self) -> Result<Cow<'_, str>, MultipartError> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/server.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn name(&self) -> Result<Cow<str>, MultipartError> {
[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] 80 |     pub fn name(&self) -> Result<Cow<'_, str>, MultipartError> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking warp v0.3.6
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> benches/megabyte_parsing.rs:120:16
[INFO] [stdout]     |
[INFO] [stdout] 120 |             if let Ok(bytes) = result {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bytes::Bytes, Infallible>
[INFO] [stdout]    --> benches/megabyte_parsing.rs:120:32
[INFO] [stdout]     |
[INFO] [stdout] 120 |             if let Ok(bytes) = result {
[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<bytes::Bytes, Infallible>
[INFO] [stdout]    --> benches/megabyte_parsing.rs:162:30
[INFO] [stdout]     |
[INFO] [stdout] 162 |             Poll::Ready(Some(Ok(bytes)))
[INFO] [stdout]     |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mpart-async` (bench "megabyte_parsing") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/client.rs:427:20
[INFO] [stdout]     |
[INFO] [stdout] 427 |                 if let Ok(bytes) = result {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/client.rs:455:20
[INFO] [stdout]     |
[INFO] [stdout] 455 |                 if let Ok(bytes) = result {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/client.rs:493:20
[INFO] [stdout]     |
[INFO] [stdout] 493 |                 if let Ok(bytes) = result {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/warp.rs:24:43
[INFO] [stdout]    |
[INFO] [stdout] 24 |   ) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  ___________________________________________^
[INFO] [stdout] 25 | |     let boundary = mime.get_param("boundary").map(|v| v.to_string()).unwrap();
[INFO] [stdout] 26 | |
[INFO] [stdout] 27 | |     let mut stream = MultipartStream::new(
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     Ok("Thanks!\n".to_string())
[INFO] [stdout] 44 | | }
[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]   --> examples/warp.rs:24:43
[INFO] [stdout]    |
[INFO] [stdout] 24 |   ) -> Result<impl warp::Reply, Infallible> {
[INFO] [stdout]    |  ___________________________________________^
[INFO] [stdout] 25 | |     let boundary = mime.get_param("boundary").map(|v| v.to_string()).unwrap();
[INFO] [stdout] 26 | |
[INFO] [stdout] 27 | |     let mut stream = MultipartStream::new(
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |     Ok("Thanks!\n".to_string())
[INFO] [stdout] 44 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/warp.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     Ok("Thanks!\n".to_string())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mpart-async` (example "warp") due to 3 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<bytes::Bytes, Infallible>
[INFO] [stdout]    --> src/client.rs:427:36
[INFO] [stdout]     |
[INFO] [stdout] 427 |                 if let Ok(bytes) = result {
[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<bytes::Bytes, Infallible>
[INFO] [stdout]    --> src/client.rs:455:36
[INFO] [stdout]     |
[INFO] [stdout] 455 |                 if let Ok(bytes) = result {
[INFO] [stdout]     |                                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bytes::Bytes, Infallible>
[INFO] [stdout]    --> src/client.rs:493:36
[INFO] [stdout]     |
[INFO] [stdout] 493 |                 if let Ok(bytes) = result {
[INFO] [stdout]     |                                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/server.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn filename(&self) -> Result<Cow<str>, MultipartError> {
[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] 62 |     pub fn filename(&self) -> Result<Cow<'_, str>, MultipartError> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/server.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn name(&self) -> Result<Cow<str>, MultipartError> {
[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] 80 |     pub fn name(&self) -> Result<Cow<'_, str>, MultipartError> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bytes::Bytes, Infallible>
[INFO] [stdout]    --> src/server.rs:980:34
[INFO] [stdout]     |
[INFO] [stdout] 980 |                 Poll::Ready(Some(Ok(self.as_mut().packets.remove(0))))
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mpart-async` (lib test) due to 4 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "62fd17330434f8d1135481314f9ebd07f2ca33e198c657f09595b0906f4f08ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62fd17330434f8d1135481314f9ebd07f2ca33e198c657f09595b0906f4f08ad", kill_on_drop: false }`
[INFO] [stdout] 62fd17330434f8d1135481314f9ebd07f2ca33e198c657f09595b0906f4f08ad
