[INFO] fetching crate user-error 1.2.8...
[INFO] checking user-error-1.2.8 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate user-error 1.2.8 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate user-error 1.2.8
[INFO] finished tweaking crates.io crate user-error 1.2.8
[INFO] tweaked toml for crates.io crate user-error 1.2.8 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate user-error 1.2.8 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adc4b6ab2663fe752b22c3e27df573e3d96d4e89e1c1083977e62ebc0e8e37ac
[INFO] running `Command { std: "docker" "start" "-a" "adc4b6ab2663fe752b22c3e27df573e3d96d4e89e1c1083977e62ebc0e8e37ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adc4b6ab2663fe752b22c3e27df573e3d96d4e89e1c1083977e62ebc0e8e37ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adc4b6ab2663fe752b22c3e27df573e3d96d4e89e1c1083977e62ebc0e8e37ac", kill_on_drop: false }`
[INFO] [stdout] adc4b6ab2663fe752b22c3e27df573e3d96d4e89e1c1083977e62ebc0e8e37ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2fce30c05f3fd1dd211c43f9b6db321b3d4126c91ccdf8b4070d072317293fe
[INFO] running `Command { std: "docker" "start" "-a" "e2fce30c05f3fd1dd211c43f9b6db321b3d4126c91ccdf8b4070d072317293fe", kill_on_drop: false }`
[INFO] [stderr]     Checking user-error v1.2.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:212:26
[INFO] [stdout]     |
[INFO] [stdout] 212 | type Source = Option<Box<(dyn Error)>>;
[INFO] [stdout]     |                          ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 212 - type Source = Option<Box<(dyn Error)>>;
[INFO] [stdout] 212 + type Source = Option<Box<dyn Error>>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:276:35
[INFO] [stdout]     |
[INFO] [stdout] 276 | fn get_ufe_struct_members(error: &(dyn Error)) -> (Summary, Reasons) {
[INFO] [stdout]     |                                   ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 276 - fn get_ufe_struct_members(error: &(dyn Error)) -> (Summary, Reasons) {
[INFO] [stdout] 276 + fn get_ufe_struct_members(error: &dyn Error) -> (Summary, Reasons) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:305:15
[INFO] [stdout]     |
[INFO] [stdout] 305 | impl From<Box<(dyn Error)>> for UserFacingError {
[INFO] [stdout]     |               ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 305 - impl From<Box<(dyn Error)>> for UserFacingError {
[INFO] [stdout] 305 + impl From<Box<dyn Error>> for UserFacingError {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:306:24
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn from(error: Box<(dyn Error)>) -> UserFacingError {
[INFO] [stdout]     |                        ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 306 -     fn from(error: Box<(dyn Error)>) -> UserFacingError {
[INFO] [stdout] 306 +     fn from(error: Box<dyn Error>) -> UserFacingError {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:322:12
[INFO] [stdout]     |
[INFO] [stdout] 322 | impl From<&(dyn Error)> for UserFacingError {
[INFO] [stdout]     |            ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 322 - impl From<&(dyn Error)> for UserFacingError {
[INFO] [stdout] 322 + impl From<&dyn Error> for UserFacingError {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:323:21
[INFO] [stdout]     |
[INFO] [stdout] 323 |     fn from(error: &(dyn Error)) -> UserFacingError {
[INFO] [stdout]     |                     ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 323 -     fn from(error: &(dyn Error)) -> UserFacingError {
[INFO] [stdout] 323 +     fn from(error: &dyn Error) -> UserFacingError {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:212:26
[INFO] [stdout]     |
[INFO] [stdout] 212 | type Source = Option<Box<(dyn Error)>>;
[INFO] [stdout]     |                          ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 212 - type Source = Option<Box<(dyn Error)>>;
[INFO] [stdout] 212 + type Source = Option<Box<dyn Error>>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:276:35
[INFO] [stdout]     |
[INFO] [stdout] 276 | fn get_ufe_struct_members(error: &(dyn Error)) -> (Summary, Reasons) {
[INFO] [stdout]     |                                   ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 276 - fn get_ufe_struct_members(error: &(dyn Error)) -> (Summary, Reasons) {
[INFO] [stdout] 276 + fn get_ufe_struct_members(error: &dyn Error) -> (Summary, Reasons) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:305:15
[INFO] [stdout]     |
[INFO] [stdout] 305 | impl From<Box<(dyn Error)>> for UserFacingError {
[INFO] [stdout]     |               ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 305 - impl From<Box<(dyn Error)>> for UserFacingError {
[INFO] [stdout] 305 + impl From<Box<dyn Error>> for UserFacingError {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:306:24
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn from(error: Box<(dyn Error)>) -> UserFacingError {
[INFO] [stdout]     |                        ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 306 -     fn from(error: Box<(dyn Error)>) -> UserFacingError {
[INFO] [stdout] 306 +     fn from(error: Box<dyn Error>) -> UserFacingError {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:322:12
[INFO] [stdout]     |
[INFO] [stdout] 322 | impl From<&(dyn Error)> for UserFacingError {
[INFO] [stdout]     |            ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 322 - impl From<&(dyn Error)> for UserFacingError {
[INFO] [stdout] 322 + impl From<&dyn Error> for UserFacingError {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:323:21
[INFO] [stdout]     |
[INFO] [stdout] 323 |     fn from(error: &(dyn Error)) -> UserFacingError {
[INFO] [stdout]     |                     ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 323 -     fn from(error: &(dyn Error)) -> UserFacingError {
[INFO] [stdout] 323 +     fn from(error: &dyn Error) -> UserFacingError {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "e2fce30c05f3fd1dd211c43f9b6db321b3d4126c91ccdf8b4070d072317293fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2fce30c05f3fd1dd211c43f9b6db321b3d4126c91ccdf8b4070d072317293fe", kill_on_drop: false }`
[INFO] [stdout] e2fce30c05f3fd1dd211c43f9b6db321b3d4126c91ccdf8b4070d072317293fe