[INFO] fetching crate unique_id_lookup 0.2.7... [INFO] checking unique_id_lookup-0.2.7 against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287 [INFO] extracting crate unique_id_lookup 0.2.7 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate unique_id_lookup 0.2.7 on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate unique_id_lookup 0.2.7 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate unique_id_lookup 0.2.7 [INFO] tweaked toml for crates.io crate unique_id_lookup 0.2.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate crates.io crate unique_id_lookup 0.2.7 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" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 99b085f22137465458fdcf4708519027337df15ad497a69e81b55abd123ea61c [INFO] running `Command { std: "docker" "start" "-a" "99b085f22137465458fdcf4708519027337df15ad497a69e81b55abd123ea61c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "99b085f22137465458fdcf4708519027337df15ad497a69e81b55abd123ea61c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "99b085f22137465458fdcf4708519027337df15ad497a69e81b55abd123ea61c", kill_on_drop: false }` [INFO] [stdout] 99b085f22137465458fdcf4708519027337df15ad497a69e81b55abd123ea61c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a3d48540cbbd42f45f4d02ac67513b665bcc150a9cb4d232a696d8220aee9ea6 [INFO] running `Command { std: "docker" "start" "-a" "a3d48540cbbd42f45f4d02ac67513b665bcc150a9cb4d232a696d8220aee9ea6", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.95 [INFO] [stderr] Checking either v1.15.0 [INFO] [stderr] Checking half v2.6.0 [INFO] [stderr] Checking clap_lex v0.7.4 [INFO] [stderr] Checking plotters-backend v0.3.7 [INFO] [stderr] Checking regex-syntax v0.8.5 [INFO] [stderr] Checking ciborium-io v0.2.2 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking plotters-svg v0.3.7 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking plotters v0.3.7 [INFO] [stderr] Checking clap_builder v4.5.39 [INFO] [stderr] Checking is-terminal v0.4.16 [INFO] [stderr] Checking anes v0.1.6 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Checking ciborium-ll v0.2.2 [INFO] [stderr] Checking oorandom v11.1.5 [INFO] [stderr] Checking unique_id_lookup v0.2.7 (/opt/rustwide/workdir) [INFO] [stdout] error[E0515]: cannot return reference to temporary value [INFO] [stdout] --> src/lib.rs:222:20 [INFO] [stdout] | [INFO] [stdout] 222 | return &UniqueIdLookup::RESULT_NONE; [INFO] [stdout] | ^--------------------------- [INFO] [stdout] | || [INFO] [stdout] | |temporary value created here [INFO] [stdout] | returns a reference to data owned by the current function [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0515]: cannot return reference to temporary value [INFO] [stdout] --> src/lib.rs:226:20 [INFO] [stdout] | [INFO] [stdout] 226 | return &UniqueIdLookup::RESULT_NONE; [INFO] [stdout] | ^--------------------------- [INFO] [stdout] | || [INFO] [stdout] | |temporary value created here [INFO] [stdout] | returns a reference to data owned by the current function [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0515`. [INFO] [stdout] [INFO] [stderr] error: could not compile `unique_id_lookup` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "a3d48540cbbd42f45f4d02ac67513b665bcc150a9cb4d232a696d8220aee9ea6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a3d48540cbbd42f45f4d02ac67513b665bcc150a9cb4d232a696d8220aee9ea6", kill_on_drop: false }` [INFO] [stdout] a3d48540cbbd42f45f4d02ac67513b665bcc150a9cb4d232a696d8220aee9ea6