[INFO] fetching crate variant-map 0.1.1...
[INFO] checking variant-map-0.1.1 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate variant-map 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate variant-map 0.1.1 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate variant-map 0.1.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate variant-map 0.1.1
[INFO] tweaked toml for crates.io crate variant-map 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded variant-map-derive v0.1.0
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63b96cb0c62c40e6441edfab4cced7c7df325840ca3b393131215cf086e6d545
[INFO] running `Command { std: "docker" "start" "-a" "63b96cb0c62c40e6441edfab4cced7c7df325840ca3b393131215cf086e6d545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63b96cb0c62c40e6441edfab4cced7c7df325840ca3b393131215cf086e6d545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63b96cb0c62c40e6441edfab4cced7c7df325840ca3b393131215cf086e6d545", kill_on_drop: false }`
[INFO] [stdout] 63b96cb0c62c40e6441edfab4cced7c7df325840ca3b393131215cf086e6d545
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0972996b130d09fd8e62a8554dfd23c25542442fb2ee206f70b12124c2176ab1
[INFO] running `Command { std: "docker" "start" "-a" "0972996b130d09fd8e62a8554dfd23c25542442fb2ee206f70b12124c2176ab1", kill_on_drop: false }`
[INFO] [stderr]     Checking variant-map v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> tests/struct_tests.rs:75:43
[INFO] [stdout]    |
[INFO] [stdout] 75 |     struct MyStructVisitor<T>(PhantomData<(T)>);
[INFO] [stdout]    |                                           ^ ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 75 -     struct MyStructVisitor<T>(PhantomData<(T)>);
[INFO] [stdout] 75 +     struct MyStructVisitor<T>(PhantomData<T>);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> tests/struct_tests.rs:75:43
[INFO] [stdout]    |
[INFO] [stdout] 75 |     struct MyStructVisitor<T>(PhantomData<(T)>);
[INFO] [stdout]    |                                           ^ ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 75 -     struct MyStructVisitor<T>(PhantomData<(T)>);
[INFO] [stdout] 75 +     struct MyStructVisitor<T>(PhantomData<T>);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "0972996b130d09fd8e62a8554dfd23c25542442fb2ee206f70b12124c2176ab1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0972996b130d09fd8e62a8554dfd23c25542442fb2ee206f70b12124c2176ab1", kill_on_drop: false }`
[INFO] [stdout] 0972996b130d09fd8e62a8554dfd23c25542442fb2ee206f70b12124c2176ab1