[INFO] fetching crate ruled-labels 0.5.1...
[INFO] checking ruled-labels-0.5.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ruled-labels 0.5.1 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate ruled-labels 0.5.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ruled-labels 0.5.1
[INFO] tweaked toml for crates.io crate ruled-labels 0.5.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ruled-labels 0.5.1 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 ruled-labels 0.5.1 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] [stderr]     Blocking waiting for file lock on package cache
[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] 5b5da626cd3be4b337e25ab1dc56426e0bcb76c524fde0c531684f9de5e2dbae
[INFO] running `Command { std: "docker" "start" "-a" "5b5da626cd3be4b337e25ab1dc56426e0bcb76c524fde0c531684f9de5e2dbae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b5da626cd3be4b337e25ab1dc56426e0bcb76c524fde0c531684f9de5e2dbae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b5da626cd3be4b337e25ab1dc56426e0bcb76c524fde0c531684f9de5e2dbae", kill_on_drop: false }`
[INFO] [stdout] 5b5da626cd3be4b337e25ab1dc56426e0bcb76c524fde0c531684f9de5e2dbae
[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] 5572984c82f5c2654de9285860e1da655a6d969c8d4475f58d41aa0bbe079b36
[INFO] running `Command { std: "docker" "start" "-a" "5572984c82f5c2654de9285860e1da655a6d969c8d4475f58d41aa0bbe079b36", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.168
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking regex-automata v0.4.9
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[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking base64 v0.12.3
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[INFO] [stderr]    Compiling hyperx v1.4.0
[INFO] [stderr]    Compiling anyhow v1.0.94
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[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]     Checking predicates v3.1.2
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[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.7
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[INFO] [stderr]     Checking hubcaps v0.6.2
[INFO] [stderr]     Checking ruled-labels v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Rules` is never constructed
[INFO] [stdout]  --> src/rllib/rules.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Rules {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `description` is never read
[INFO] [stdout]   --> src/rllib/tests.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct TestSpec {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 29 |     pub name: String,
[INFO] [stdout] 30 |     pub description: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestSpec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rllib/label_match_set.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&self) -> Iter<LabelMatch> {
[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] 33 |     pub fn iter(&self) -> Iter<'_, LabelMatch> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<LabelId, Infallible>
[INFO] [stdout]    --> src/rllib/specs.rs:179:17
[INFO] [stdout]     |
[INFO] [stdout] 179 |             .map(|label| LabelId::try_from(label.name.as_str()).unwrap())
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruled-labels` (bin "ruled-labels") due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `Rules` is never constructed
[INFO] [stdout]  --> src/rllib/rules.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Rules {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `description` is never read
[INFO] [stdout]   --> src/rllib/tests.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct TestSpec {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 29 |     pub name: String,
[INFO] [stdout] 30 |     pub description: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestSpec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rllib/label_match_set.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn iter(&self) -> Iter<LabelMatch> {
[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] 33 |     pub fn iter(&self) -> Iter<'_, LabelMatch> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<parsed_label::LabelId, Infallible>
[INFO] [stdout]    --> src/rllib/specs.rs:179:17
[INFO] [stdout]     |
[INFO] [stdout] 179 |             .map(|label| LabelId::try_from(label.name.as_str()).unwrap())
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruled-labels` (bin "ruled-labels" test) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "5572984c82f5c2654de9285860e1da655a6d969c8d4475f58d41aa0bbe079b36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5572984c82f5c2654de9285860e1da655a6d969c8d4475f58d41aa0bbe079b36", kill_on_drop: false }`
[INFO] [stdout] 5572984c82f5c2654de9285860e1da655a6d969c8d4475f58d41aa0bbe079b36
