[INFO] crate extension-trait 0.2.1 is already in cache
[INFO] checking extension-trait-0.2.1 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[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 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bacf6e40997317f31f3dd39a2cd7b92b2a89a64a02554c2c670ae413df4b00f5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "bacf6e40997317f31f3dd39a2cd7b92b2a89a64a02554c2c670ae413df4b00f5"`
[INFO] [stderr]     Checking syn v1.0.17
[INFO] [stderr]    Compiling extension-trait v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/lib.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 | /         (quote! {
[INFO] [stderr] 78 | |             #(#attrs)*
[INFO] [stderr] 79 | |             #visibility #unsafety trait #path {
[INFO] [stderr] 80 | |                 #(#items)*
[INFO] [stderr] ...  |
[INFO] [stderr] 83 | |         }
[INFO] [stderr] 84 | |         .into())
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 77 |         quote! {
[INFO] [stderr] 78 |             #(#attrs)*
[INFO] [stderr] 79 |             #visibility #unsafety trait #path {
[INFO] [stderr] 80 |                 #(#items)*
[INFO] [stderr] 81 |             }
[INFO] [stderr] 82 |             #input
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/lib.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 | /         (quote! {
[INFO] [stderr] 78 | |             #(#attrs)*
[INFO] [stderr] 79 | |             #visibility #unsafety trait #path {
[INFO] [stderr] 80 | |                 #(#items)*
[INFO] [stderr] ...  |
[INFO] [stderr] 83 | |         }
[INFO] [stderr] 84 | |         .into())
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 77 |         quote! {
[INFO] [stderr] 78 |             #(#attrs)*
[INFO] [stderr] 79 |             #visibility #unsafety trait #path {
[INFO] [stderr] 80 |                 #(#items)*
[INFO] [stderr] 81 |             }
[INFO] [stderr] 82 |             #input
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/lib.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 | /         (quote! {
[INFO] [stderr] 78 | |             #(#attrs)*
[INFO] [stderr] 79 | |             #visibility #unsafety trait #path {
[INFO] [stderr] 80 | |                 #(#items)*
[INFO] [stderr] ...  |
[INFO] [stderr] 83 | |         }
[INFO] [stderr] 84 | |         .into())
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 77 |         quote! {
[INFO] [stderr] 78 |             #(#attrs)*
[INFO] [stderr] 79 |             #visibility #unsafety trait #path {
[INFO] [stderr] 80 |                 #(#items)*
[INFO] [stderr] 81 |             }
[INFO] [stderr] 82 |             #input
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.18s
[INFO] running `"docker" "inspect" "bacf6e40997317f31f3dd39a2cd7b92b2a89a64a02554c2c670ae413df4b00f5"`
[INFO] running `"docker" "rm" "-f" "bacf6e40997317f31f3dd39a2cd7b92b2a89a64a02554c2c670ae413df4b00f5"`
[INFO] [stdout] bacf6e40997317f31f3dd39a2cd7b92b2a89a64a02554c2c670ae413df4b00f5