[INFO] fetching crate serbia 0.4.3... [INFO] building serbia-0.4.3 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2 [INFO] extracting crate serbia 0.4.3 into /workspace/builds/worker-2-tc1/source [INFO] started tweaking crates.io crate serbia 0.4.3 [INFO] finished tweaking crates.io crate serbia 0.4.3 [INFO] tweaked toml for crates.io crate serbia 0.4.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate serbia 0.4.3 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 19 packages to latest compatible versions [INFO] [stderr] Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated) [INFO] [stderr] Adding syn v1.0.109 (available: v2.0.106) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2e323a17aee519a858d1b5e09558b5b663a4562a3657e0fd9a199443fa09631c [INFO] running `Command { std: "docker" "start" "-a" "2e323a17aee519a858d1b5e09558b5b663a4562a3657e0fd9a199443fa09631c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2e323a17aee519a858d1b5e09558b5b663a4562a3657e0fd9a199443fa09631c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2e323a17aee519a858d1b5e09558b5b663a4562a3657e0fd9a199443fa09631c", kill_on_drop: false }` [INFO] [stdout] 2e323a17aee519a858d1b5e09558b5b663a4562a3657e0fd9a199443fa09631c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9b8a06f167d61d60a51b0f0c72230bb1663ca226c320780c423e7ce511c96295 [INFO] running `Command { std: "docker" "start" "-a" "9b8a06f167d61d60a51b0f0c72230bb1663ca226c320780c423e7ce511c96295", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling serbia v0.4.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/item.rs:71:29 [INFO] [stdout] | [INFO] [stdout] 71 | pub fn big_array_fields(&mut self) -> impl Iterator { [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] 71 | pub fn big_array_fields(&mut self) -> impl Iterator> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.72s [INFO] running `Command { std: "docker" "inspect" "9b8a06f167d61d60a51b0f0c72230bb1663ca226c320780c423e7ce511c96295", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b8a06f167d61d60a51b0f0c72230bb1663ca226c320780c423e7ce511c96295", kill_on_drop: false }` [INFO] [stdout] 9b8a06f167d61d60a51b0f0c72230bb1663ca226c320780c423e7ce511c96295 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a5870b2237a9888507b302887ce16c84a67188addb1d31ec88933131c4ca2225 [INFO] running `Command { std: "docker" "start" "-a" "a5870b2237a9888507b302887ce16c84a67188addb1d31ec88933131c4ca2225", kill_on_drop: false }` [INFO] [stderr] Compiling hashbrown v0.12.3 [INFO] [stderr] Compiling linked-hash-map v0.5.6 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Compiling yaml-rust v0.4.5 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling serbia v0.4.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/item.rs:71:29 [INFO] [stdout] | [INFO] [stdout] 71 | pub fn big_array_fields(&mut self) -> impl Iterator { [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] 71 | pub fn big_array_fields(&mut self) -> impl Iterator> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling serde_yaml v0.8.26 [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> tests/04_mem_leaks.rs:45:16 [INFO] [stdout] | [INFO] [stdout] 45 | struct Foo(Arc); [INFO] [stdout] | --- ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the type `[u8; 42]` does not permit being left uninitialized [INFO] [stdout] --> tests/03_serde_field_attrs.rs:49:48 [INFO] [stdout] | [INFO] [stdout] 49 | let mut arr: Self::Value = std::mem::MaybeUninit::uninit().assume_init(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this code causes undefined behavior when executed [INFO] [stdout] | help: use `MaybeUninit` instead, and only call `assume_init` after initialization is done [INFO] [stdout] | [INFO] [stdout] = note: integers must be initialized [INFO] [stdout] = note: `#[warn(invalid_value)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/item.rs:71:29 [INFO] [stdout] | [INFO] [stdout] 71 | pub fn big_array_fields(&mut self) -> impl Iterator { [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] 71 | pub fn big_array_fields(&mut self) -> impl Iterator> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 10.10s [INFO] running `Command { std: "docker" "inspect" "a5870b2237a9888507b302887ce16c84a67188addb1d31ec88933131c4ca2225", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a5870b2237a9888507b302887ce16c84a67188addb1d31ec88933131c4ca2225", kill_on_drop: false }` [INFO] [stdout] a5870b2237a9888507b302887ce16c84a67188addb1d31ec88933131c4ca2225