[INFO] fetching crate piper 0.2.1... [INFO] checking piper-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate piper 0.2.1 into /workspace/builds/worker-5-tc1/source [INFO] validating manifest of crates.io crate piper 0.2.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate piper 0.2.1 [INFO] finished tweaking crates.io crate piper 0.2.1 [INFO] tweaked toml for crates.io crate piper 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 100 packages [INFO] [stderr] Adding anes v0.1.6 (latest: v0.2.0) [INFO] [stderr] Adding async-channel v1.9.0 (latest: v2.2.0) [INFO] [stderr] Adding async-io v1.13.0 (latest: v2.3.2) [INFO] [stderr] Adding async-lock v2.8.0 (latest: v3.3.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding clap v3.2.25 (latest: v4.5.4) [INFO] [stderr] Adding clap_lex v0.2.4 (latest: v0.7.0) [INFO] [stderr] Adding criterion v0.4.0 (latest: v0.5.1) [INFO] [stderr] Adding event-listener v2.5.3 (latest: v5.3.0) [INFO] [stderr] Adding event-listener v4.0.3 (latest: v5.3.0) [INFO] [stderr] Adding event-listener-strategy v0.4.0 (latest: v0.5.1) [INFO] [stderr] Adding fastrand v1.9.0 (latest: v2.0.2) [INFO] [stderr] Adding futures-lite v1.13.0 (latest: v2.3.0) [INFO] [stderr] Adding hashbrown v0.12.3 (latest: v0.14.3) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.3.9) [INFO] [stderr] Adding indexmap v1.9.3 (latest: v2.2.6) [INFO] [stderr] Adding io-lifetimes v1.0.11 (latest: v2.0.3) [INFO] [stderr] Adding itertools v0.10.5 (latest: v0.12.1) [INFO] [stderr] Adding linux-raw-sys v0.3.8 (latest: v0.6.4) [INFO] [stderr] Adding os_str_bytes v6.6.1 (latest: v7.0.0) [INFO] [stderr] Adding polling v2.8.0 (latest: v3.6.0) [INFO] [stderr] Adding rustix v0.37.27 (latest: v0.38.32) [INFO] [stderr] Adding socket2 v0.4.10 (latest: v0.5.6) [INFO] [stderr] Adding windows-sys v0.48.0 (latest: v0.52.0) [INFO] [stderr] Adding windows-targets v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_i686_gnu v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_i686_msvc v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4) [INFO] [stderr] Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded easy-parallel v3.3.1 [INFO] [stderr] Downloaded portable-atomic-util v0.1.5 [INFO] [stderr] Downloaded portable-atomic v1.6.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 99a57e8a373252245f29a886f7c485787741b332cb8710aa95e1e2fbb43541b8 [INFO] running `Command { std: "docker" "start" "-a" "99a57e8a373252245f29a886f7c485787741b332cb8710aa95e1e2fbb43541b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "99a57e8a373252245f29a886f7c485787741b332cb8710aa95e1e2fbb43541b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "99a57e8a373252245f29a886f7c485787741b332cb8710aa95e1e2fbb43541b8", kill_on_drop: false }` [INFO] [stdout] 99a57e8a373252245f29a886f7c485787741b332cb8710aa95e1e2fbb43541b8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e3287e272f740fb548c11377b3224dced13f22224f396ade41b100cea02775eb [INFO] running `Command { std: "docker" "start" "-a" "e3287e272f740fb548c11377b3224dced13f22224f396ade41b100cea02775eb", kill_on_drop: false }` [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Checking os_str_bytes v6.6.1 [INFO] [stderr] Checking textwrap v0.16.1 [INFO] [stderr] Checking polling v2.8.0 [INFO] [stderr] Checking futures-lite v2.3.0 [INFO] [stderr] Checking easy-parallel v3.3.1 [INFO] [stderr] Checking piper v0.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Checking serde v1.0.197 [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> src/lib.rs:184:5 [INFO] [stdout] | [INFO] [stdout] 184 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking concurrent-queue v2.4.0 [INFO] [stderr] Checking clap v3.2.25 [INFO] [stderr] Checking event-listener v4.0.3 [INFO] [stderr] Checking async-channel v1.9.0 [INFO] [stderr] Checking async-io v1.13.0 [INFO] [stderr] Checking event-listener-strategy v0.4.0 [INFO] [stderr] Checking async-lock v3.3.0 [INFO] [stderr] Checking async-executor v1.9.1 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.4.0 [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> src/lib.rs:184:5 [INFO] [stdout] | [INFO] [stdout] 184 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.62s [INFO] running `Command { std: "docker" "inspect" "e3287e272f740fb548c11377b3224dced13f22224f396ade41b100cea02775eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e3287e272f740fb548c11377b3224dced13f22224f396ade41b100cea02775eb", kill_on_drop: false }` [INFO] [stdout] e3287e272f740fb548c11377b3224dced13f22224f396ade41b100cea02775eb