[INFO] fetching crate extension-trait 0.2.1...
[INFO] checking extension-trait-0.2.1 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate extension-trait 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate extension-trait 0.2.1 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c80c395f7355abd5f5c80f247f9513f326798e1ae795c06ca68b215493d91e43
[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" "c80c395f7355abd5f5c80f247f9513f326798e1ae795c06ca68b215493d91e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c80c395f7355abd5f5c80f247f9513f326798e1ae795c06ca68b215493d91e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c80c395f7355abd5f5c80f247f9513f326798e1ae795c06ca68b215493d91e43", kill_on_drop: false }`
[INFO] [stdout] c80c395f7355abd5f5c80f247f9513f326798e1ae795c06ca68b215493d91e43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 336e6649dba3f78ad4e86c71229e7e94e5d261db92df52a0e21f5bf792252d10
[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" "336e6649dba3f78ad4e86c71229e7e94e5d261db92df52a0e21f5bf792252d10", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[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 18.41s
[INFO] running `Command { std: "docker" "inspect" "336e6649dba3f78ad4e86c71229e7e94e5d261db92df52a0e21f5bf792252d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "336e6649dba3f78ad4e86c71229e7e94e5d261db92df52a0e21f5bf792252d10", kill_on_drop: false }`
[INFO] [stdout] 336e6649dba3f78ad4e86c71229e7e94e5d261db92df52a0e21f5bf792252d10