[INFO] fetching crate impl-trait-for-tuples 0.2.0...
[INFO] checking impl-trait-for-tuples-0.2.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate impl-trait-for-tuples 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate impl-trait-for-tuples 0.2.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate impl-trait-for-tuples 0.2.0
[INFO] finished tweaking crates.io crate impl-trait-for-tuples 0.2.0
[INFO] tweaked toml for crates.io crate impl-trait-for-tuples 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5f8530b3bd2ed4f01fc22cf7c55f51a420130e18b8a7448d5e791e9208fa8679
[INFO] running `Command { std: "docker" "start" "-a" "5f8530b3bd2ed4f01fc22cf7c55f51a420130e18b8a7448d5e791e9208fa8679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f8530b3bd2ed4f01fc22cf7c55f51a420130e18b8a7448d5e791e9208fa8679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f8530b3bd2ed4f01fc22cf7c55f51a420130e18b8a7448d5e791e9208fa8679", kill_on_drop: false }`
[INFO] [stdout] 5f8530b3bd2ed4f01fc22cf7c55f51a420130e18b8a7448d5e791e9208fa8679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8fb142161001872129b74704eda42efc654ec3a3a89f4080b5726e554f7913c6
[INFO] running `Command { std: "docker" "start" "-a" "8fb142161001872129b74704eda42efc654ec3a3a89f4080b5726e554f7913c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking impl-trait-for-tuples v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking trybuild v1.0.38
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> tests/codegen.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     test::<(EmptyTraitImpl)>();
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> tests/codegen.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     test::<(EmptyTraitImpl)>();
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> tests/codegen.rs:198:12
[INFO] [stdout]     |
[INFO] [stdout] 198 |     test::<(Impl)>(&mut counter);
[INFO] [stdout]     |            ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> tests/codegen.rs:242:12
[INFO] [stdout]     |
[INFO] [stdout] 242 |     test::<(Impl)>(&mut counter);
[INFO] [stdout]     |            ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> tests/codegen.rs:289:22
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let res = test::<(Impl)>(&mut counter);
[INFO] [stdout]     |                      ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> tests/codegen.rs:339:22
[INFO] [stdout]     |
[INFO] [stdout] 339 |     let res = test::<(Impl)>(&mut counter);
[INFO] [stdout]     |                      ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.54s
[INFO] running `Command { std: "docker" "inspect" "8fb142161001872129b74704eda42efc654ec3a3a89f4080b5726e554f7913c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fb142161001872129b74704eda42efc654ec3a3a89f4080b5726e554f7913c6", kill_on_drop: false }`
[INFO] [stdout] 8fb142161001872129b74704eda42efc654ec3a3a89f4080b5726e554f7913c6