[INFO] fetching crate scalp 0.4.3...
[INFO] checking scalp-0.4.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate scalp 0.4.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate scalp 0.4.3
[INFO] finished tweaking crates.io crate scalp 0.4.3
[INFO] tweaked toml for crates.io crate scalp 0.4.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scalp 0.4.3 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 scalp 0.4.3 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] d10cc49679b4f66792ff94d6ac6ab5d64b72c63050d918f22f2a4ec41871586c
[INFO] running `Command { std: "docker" "start" "-a" "d10cc49679b4f66792ff94d6ac6ab5d64b72c63050d918f22f2a4ec41871586c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d10cc49679b4f66792ff94d6ac6ab5d64b72c63050d918f22f2a4ec41871586c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d10cc49679b4f66792ff94d6ac6ab5d64b72c63050d918f22f2a4ec41871586c", kill_on_drop: false }`
[INFO] [stdout] d10cc49679b4f66792ff94d6ac6ab5d64b72c63050d918f22f2a4ec41871586c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a8fc493fa2961e8917b5899a20bd201a7d0350f820593c0514a1efc2f61534a7
[INFO] running `Command { std: "docker" "start" "-a" "a8fc493fa2961e8917b5899a20bd201a7d0350f820593c0514a1efc2f61534a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling pulldown-cmark v0.9.6
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]    Compiling bitflags v2.4.2
[INFO] [stderr]    Compiling itoa v1.0.10
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling ryu v1.0.16
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling fastrand v2.0.1
[INFO] [stderr]    Compiling walkdir v2.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling bytecount v0.6.7
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking half v2.3.1
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking plotters-svg v0.3.5
[INFO] [stderr]     Checking orn v0.4.2
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking clap_builder v4.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking termion v3.0.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]    Compiling tempfile v3.10.0
[INFO] [stderr]     Checking clap v4.5.0
[INFO] [stderr]     Checking is-terminal v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling checkito_macro v0.1.1
[INFO] [stderr]     Checking cargo-platform v0.1.6
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking cargo_metadata v0.14.2
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Checking skeptic v0.13.7
[INFO] [stderr]    Compiling checkito v1.5.1
[INFO] [stderr]    Compiling scalp v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Unit, Infallible>
[INFO] [stdout]   --> src/build.rs:40:53
[INFO] [stdout]    |
[INFO] [stdout] 40 |       fn from_str(_: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 41 | |         Ok(Unit)
[INFO] [stdout] 42 | |     }
[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<Unit, Infallible>
[INFO] [stdout]   --> src/build.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(Unit)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/help.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn own(&mut self) -> Helper<S> {
[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] 50 |     fn own(&mut self) -> Helper<'_, S> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/help.rs:59:15
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn indent(&mut self) -> Helper<S> {
[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] 59 |     fn indent(&mut self) -> Helper<'_, S> {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/help.rs:63:20
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn indent_with(&mut self, by: usize) -> Helper<S> {
[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] 63 |     fn indent_with(&mut self, by: usize) -> Helper<'_, S> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/help.rs:610:9
[INFO] [stdout]     |
[INFO] [stdout] 610 |         &mut self,
[INFO] [stdout]     |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 614 |     ) -> Result<Helper<S>, fmt::Error> {
[INFO] [stdout]     |                 ^^^^^^^^^ the same lifetime is hidden 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] 614 |     ) -> Result<Helper<'_, S>, fmt::Error> {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parse.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn own(&mut self) -> Context {
[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] 158 |     fn own(&mut self) -> Context<'_> {
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parse.rs:270:11
[INFO] [stdout]     |
[INFO] [stdout] 270 |     fn at(&mut self, index: usize) -> Context {
[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] 270 |     fn at(&mut self, index: usize) -> Context<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `scalp` (lib) due to 2 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Unit, Infallible>
[INFO] [stdout]   --> src/build.rs:40:53
[INFO] [stdout]    |
[INFO] [stdout] 40 |       fn from_str(_: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 41 | |         Ok(Unit)
[INFO] [stdout] 42 | |     }
[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<Unit, Infallible>
[INFO] [stdout]   --> src/build.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(Unit)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/help.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn own(&mut self) -> Helper<S> {
[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] 50 |     fn own(&mut self) -> Helper<'_, S> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/help.rs:59:15
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn indent(&mut self) -> Helper<S> {
[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] 59 |     fn indent(&mut self) -> Helper<'_, S> {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/help.rs:63:20
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn indent_with(&mut self, by: usize) -> Helper<S> {
[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] 63 |     fn indent_with(&mut self, by: usize) -> Helper<'_, S> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/help.rs:610:9
[INFO] [stdout]     |
[INFO] [stdout] 610 |         &mut self,
[INFO] [stdout]     |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 614 |     ) -> Result<Helper<S>, fmt::Error> {
[INFO] [stdout]     |                 ^^^^^^^^^ the same lifetime is hidden 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] 614 |     ) -> Result<Helper<'_, S>, fmt::Error> {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parse.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn own(&mut self) -> Context {
[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] 158 |     fn own(&mut self) -> Context<'_> {
[INFO] [stdout]     |                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parse.rs:270:11
[INFO] [stdout]     |
[INFO] [stdout] 270 |     fn at(&mut self, index: usize) -> Context {
[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] 270 |     fn at(&mut self, index: usize) -> Context<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `scalp` (lib test) due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a8fc493fa2961e8917b5899a20bd201a7d0350f820593c0514a1efc2f61534a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8fc493fa2961e8917b5899a20bd201a7d0350f820593c0514a1efc2f61534a7", kill_on_drop: false }`
[INFO] [stdout] a8fc493fa2961e8917b5899a20bd201a7d0350f820593c0514a1efc2f61534a7
