[INFO] crate extension-trait 0.2.1 is already in cache
[INFO] checking extension-trait-0.2.1 against master#8ac1525e091d3db28e67adcbbd6db1e1deaa37fb for pr-73323
[INFO] extracting crate extension-trait 0.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate extension-trait 0.2.1 on toolchain 8ac1525e091d3db28e67adcbbd6db1e1deaa37fb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate extension-trait 0.2.1
[INFO] finished tweaking crates.io crate extension-trait 0.2.1
[INFO] tweaked toml for crates.io crate extension-trait 0.2.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2f3d74aba0842bceae2cc5ee281bbb7b3be7d18f98b99a84aab9efe07df5c40
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d2f3d74aba0842bceae2cc5ee281bbb7b3be7d18f98b99a84aab9efe07df5c40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2f3d74aba0842bceae2cc5ee281bbb7b3be7d18f98b99a84aab9efe07df5c40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2f3d74aba0842bceae2cc5ee281bbb7b3be7d18f98b99a84aab9efe07df5c40", kill_on_drop: false }`
[INFO] [stdout] d2f3d74aba0842bceae2cc5ee281bbb7b3be7d18f98b99a84aab9efe07df5c40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6145d1f7ef2f218fccd0d450adf2437004a86aefa957d7fb99acdf149558bd6c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6145d1f7ef2f218fccd0d450adf2437004a86aefa957d7fb99acdf149558bd6c", kill_on_drop: false }`
[INFO] [stderr]     Checking proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking extension-trait v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/lib.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | /         (quote! {
[INFO] [stdout] 78 | |             #(#attrs)*
[INFO] [stdout] 79 | |             #visibility #unsafety trait #path {
[INFO] [stdout] 80 | |                 #(#items)*
[INFO] [stdout] ...  |
[INFO] [stdout] 83 | |         }
[INFO] [stdout] 84 | |         .into())
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 77 |         quote! {
[INFO] [stdout] 78 |             #(#attrs)*
[INFO] [stdout] 79 |             #visibility #unsafety trait #path {
[INFO] [stdout] 80 |                 #(#items)*
[INFO] [stdout] 81 |             }
[INFO] [stdout] 82 |             #input
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/lib.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | /         (quote! {
[INFO] [stdout] 78 | |             #(#attrs)*
[INFO] [stdout] 79 | |             #visibility #unsafety trait #path {
[INFO] [stdout] 80 | |                 #(#items)*
[INFO] [stdout] ...  |
[INFO] [stdout] 83 | |         }
[INFO] [stdout] 84 | |         .into())
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 77 |         quote! {
[INFO] [stdout] 78 |             #(#attrs)*
[INFO] [stdout] 79 |             #visibility #unsafety trait #path {
[INFO] [stdout] 80 |                 #(#items)*
[INFO] [stdout] 81 |             }
[INFO] [stdout] 82 |             #input
[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] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/lib.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | /         (quote! {
[INFO] [stdout] 78 | |             #(#attrs)*
[INFO] [stdout] 79 | |             #visibility #unsafety trait #path {
[INFO] [stdout] 80 | |                 #(#items)*
[INFO] [stdout] ...  |
[INFO] [stdout] 83 | |         }
[INFO] [stdout] 84 | |         .into())
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 77 |         quote! {
[INFO] [stdout] 78 |             #(#attrs)*
[INFO] [stdout] 79 |             #visibility #unsafety trait #path {
[INFO] [stdout] 80 |                 #(#items)*
[INFO] [stdout] 81 |             }
[INFO] [stdout] 82 |             #input
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.89s
[INFO] running `Command { std: "docker" "inspect" "6145d1f7ef2f218fccd0d450adf2437004a86aefa957d7fb99acdf149558bd6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6145d1f7ef2f218fccd0d450adf2437004a86aefa957d7fb99acdf149558bd6c", kill_on_drop: false }`
[INFO] [stdout] 6145d1f7ef2f218fccd0d450adf2437004a86aefa957d7fb99acdf149558bd6c