[INFO] cloning repository https://github.com/chevdor/ruled_labels
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chevdor/ruled_labels" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchevdor%2Fruled_labels", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchevdor%2Fruled_labels'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c26c19693b88a48569b0c12a0e83f36718e0d3b
[INFO] checking chevdor/ruled_labels against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchevdor%2Fruled_labels" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/chevdor/ruled_labels
[INFO] finished tweaking git repo https://github.com/chevdor/ruled_labels
[INFO] tweaked toml for git repo https://github.com/chevdor/ruled_labels written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chevdor/ruled_labels 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 git repo https://github.com/chevdor/ruled_labels 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 44d189e104ace7ca8a747fce342d2d94313f1f0c428f308da21ad990bd56d9d9
[INFO] running `Command { std: "docker" "start" "-a" "44d189e104ace7ca8a747fce342d2d94313f1f0c428f308da21ad990bd56d9d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44d189e104ace7ca8a747fce342d2d94313f1f0c428f308da21ad990bd56d9d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44d189e104ace7ca8a747fce342d2d94313f1f0c428f308da21ad990bd56d9d9", kill_on_drop: false }`
[INFO] [stdout] 44d189e104ace7ca8a747fce342d2d94313f1f0c428f308da21ad990bd56d9d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2e713dc550808eecef9266d083a327c90e6fd753ced1572756c17bf763bba799
[INFO] running `Command { std: "docker" "start" "-a" "2e713dc550808eecef9266d083a327c90e6fd753ced1572756c17bf763bba799", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling cc v1.2.13
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking tinyvec v1.8.1
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking utf8parse v0.2.2
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking anstyle-parse v0.2.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.1
[INFO] [stderr]     Checking unicode-bidi v0.3.18
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking iana-time-zone v0.1.61
[INFO] [stderr]     Checking anstyle-query v1.1.2
[INFO] [stderr]     Checking colorchoice v1.0.3
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling hyperx v1.4.0
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]     Checking anstream v0.6.18
[INFO] [stderr]     Checking chrono v0.4.39
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]     Checking predicates-core v1.0.9
[INFO] [stderr]     Checking clap_lex v0.7.4
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]     Checking language-tags v0.3.2
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking unicode-width v0.2.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling assert_cmd v2.0.16
[INFO] [stderr]     Checking clap_builder v4.5.27
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking numtoa v0.2.4
[INFO] [stderr]     Checking termtree v0.5.1
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking data-encoding v2.8.0
[INFO] [stderr]     Checking termion v4.0.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking predicates-tree v1.0.12
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking predicates v3.1.3
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking url v2.3.0
[INFO] [stderr]     Checking simple_asn1 v0.4.1
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking bstr v1.11.3
[INFO] [stderr]     Checking pem v0.8.3
[INFO] [stderr]     Checking env_filter v0.1.3
[INFO] [stderr]     Checking env_logger v0.11.6
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.9
[INFO] [stderr]    Compiling clap_derive v4.5.28
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking pin-project v1.1.9
[INFO] [stderr]     Checking webpki-roots v0.20.0
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]     Checking clap v4.5.28
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking tokio-rustls v0.14.1
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking semver v1.0.25
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking jsonwebtoken v7.2.0
[INFO] [stderr]     Checking hyper v0.13.10
[INFO] [stderr]     Checking hyper-rustls v0.21.0
[INFO] [stderr]     Checking reqwest v0.10.10
[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" "2e713dc550808eecef9266d083a327c90e6fd753ced1572756c17bf763bba799", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e713dc550808eecef9266d083a327c90e6fd753ced1572756c17bf763bba799", kill_on_drop: false }`
[INFO] [stdout] 2e713dc550808eecef9266d083a327c90e6fd753ced1572756c17bf763bba799
