[INFO] fetching crate twiggy-traits 0.7.0... [INFO] checking twiggy-traits-0.7.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate twiggy-traits 0.7.0 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate twiggy-traits 0.7.0 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 twiggy-traits 0.7.0 [INFO] finished tweaking crates.io crate twiggy-traits 0.7.0 [INFO] tweaked toml for crates.io crate twiggy-traits 0.7.0 written to /workspace/builds/worker-6-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] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 43 packages [INFO] [stderr] Adding cpp_demangle v0.3.5 (latest: v0.4.3) [INFO] [stderr] Adding fallible-iterator v0.2.0 (latest: v0.3.0) [INFO] [stderr] Adding fixedbitset v0.4.2 (latest: v0.5.6) [INFO] [stderr] Adding gimli v0.25.0 (latest: v0.28.1) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding synstructure v0.12.6 (latest: v0.13.1) [INFO] [stderr] Adding wasmparser v0.35.3 (latest: v0.202.0) [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] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded frozen v1.0.0 [INFO] [stderr] Downloaded twiggy-ir v0.7.0 [INFO] [stderr] Downloaded wasmparser v0.35.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c7814e417360b82862c184440d8e67427aaea75bd1cc41e30d9103255d5c2f30 [INFO] running `Command { std: "docker" "start" "-a" "c7814e417360b82862c184440d8e67427aaea75bd1cc41e30d9103255d5c2f30", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c7814e417360b82862c184440d8e67427aaea75bd1cc41e30d9103255d5c2f30", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c7814e417360b82862c184440d8e67427aaea75bd1cc41e30d9103255d5c2f30", kill_on_drop: false }` [INFO] [stdout] c7814e417360b82862c184440d8e67427aaea75bd1cc41e30d9103255d5c2f30 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ad2bef6a5909b02624c947ee7a44d211d53a8b5883fa6c63631a76e976a078eb [INFO] running `Command { std: "docker" "start" "-a" "ad2bef6a5909b02624c947ee7a44d211d53a8b5883fa6c63631a76e976a078eb", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Compiling cpp_demangle v0.3.5 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Compiling backtrace v0.3.71 [INFO] [stderr] Checking miniz_oxide v0.7.2 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking fixedbitset v0.4.2 [INFO] [stderr] Checking regex-syntax v0.8.3 [INFO] [stderr] Checking csv-core v0.1.11 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking frozen v1.0.0 [INFO] [stderr] Checking wasmparser v0.35.3 [INFO] [stderr] Checking csv v1.3.0 [INFO] [stderr] Checking petgraph v0.6.4 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking twiggy-ir v0.7.0 [INFO] [stderr] Checking twiggy-traits v0.7.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `items` [INFO] [stdout] --> traits.rs:224:9 [INFO] [stdout] | [INFO] [stdout] 224 | items: &ir::Items, [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_items` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `destination` [INFO] [stdout] --> traits.rs:225:9 [INFO] [stdout] | [INFO] [stdout] 225 | destination: &mut dyn io::Write, [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `items` [INFO] [stdout] --> traits.rs:224:9 [INFO] [stdout] | [INFO] [stdout] 224 | items: &ir::Items, [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_items` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `destination` [INFO] [stdout] --> traits.rs:225:9 [INFO] [stdout] | [INFO] [stdout] 225 | destination: &mut dyn io::Write, [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.02s [INFO] running `Command { std: "docker" "inspect" "ad2bef6a5909b02624c947ee7a44d211d53a8b5883fa6c63631a76e976a078eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ad2bef6a5909b02624c947ee7a44d211d53a8b5883fa6c63631a76e976a078eb", kill_on_drop: false }` [INFO] [stdout] ad2bef6a5909b02624c947ee7a44d211d53a8b5883fa6c63631a76e976a078eb [INFO] checking twiggy-traits-0.7.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate twiggy-traits 0.7.0 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate twiggy-traits 0.7.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate twiggy-traits 0.7.0 [INFO] finished tweaking crates.io crate twiggy-traits 0.7.0 [INFO] tweaked toml for crates.io crate twiggy-traits 0.7.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ad21797f577a72aedd0d06f11e676cd21d2c592dcb4f7dae06f955fe72f389b4 [INFO] running `Command { std: "docker" "start" "-a" "ad21797f577a72aedd0d06f11e676cd21d2c592dcb4f7dae06f955fe72f389b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ad21797f577a72aedd0d06f11e676cd21d2c592dcb4f7dae06f955fe72f389b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ad21797f577a72aedd0d06f11e676cd21d2c592dcb4f7dae06f955fe72f389b4", kill_on_drop: false }` [INFO] [stdout] ad21797f577a72aedd0d06f11e676cd21d2c592dcb4f7dae06f955fe72f389b4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 588326c56f1367fe5cabb2df6328ddf5422004354831afcb6d7e7039334dd07c [INFO] running `Command { std: "docker" "start" "-a" "588326c56f1367fe5cabb2df6328ddf5422004354831afcb6d7e7039334dd07c", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Compiling cpp_demangle v0.3.5 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Compiling backtrace v0.3.71 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking miniz_oxide v0.7.2 [INFO] [stderr] Checking fixedbitset v0.4.2 [INFO] [stderr] Checking regex-syntax v0.8.3 [INFO] [stderr] Checking csv-core v0.1.11 [INFO] [stderr] Checking frozen v1.0.0 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking wasmparser v0.35.3 [INFO] [stderr] Checking petgraph v0.6.4 [INFO] [stderr] Checking csv v1.3.0 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking twiggy-ir v0.7.0 [INFO] [stderr] Checking twiggy-traits v0.7.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `items` [INFO] [stdout] --> traits.rs:224:9 [INFO] [stdout] | [INFO] [stdout] 224 | items: &ir::Items, [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_items` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `destination` [INFO] [stdout] --> traits.rs:225:9 [INFO] [stdout] | [INFO] [stdout] 225 | destination: &mut dyn io::Write, [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `items` [INFO] [stdout] --> traits.rs:224:9 [INFO] [stdout] | [INFO] [stdout] 224 | items: &ir::Items, [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_items` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `destination` [INFO] [stdout] --> traits.rs:225:9 [INFO] [stdout] | [INFO] [stdout] 225 | destination: &mut dyn io::Write, [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.02s [INFO] running `Command { std: "docker" "inspect" "588326c56f1367fe5cabb2df6328ddf5422004354831afcb6d7e7039334dd07c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "588326c56f1367fe5cabb2df6328ddf5422004354831afcb6d7e7039334dd07c", kill_on_drop: false }` [INFO] [stdout] 588326c56f1367fe5cabb2df6328ddf5422004354831afcb6d7e7039334dd07c