[INFO] fetching crate ur20 0.5.1...
[INFO] checking ur20-0.5.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate ur20 0.5.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate ur20 0.5.1 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ur20 0.5.1
[INFO] finished tweaking crates.io crate ur20 0.5.1
[INFO] tweaked toml for crates.io crate ur20 0.5.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding num-derive v0.2.5 (latest: v0.4.2)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.86)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.37)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.77)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56a1b16accc0c1cbc67aac8a8e1d7b05546749273c12671e89953bb477b7053d
[INFO] running `Command { std: "docker" "start" "-a" "56a1b16accc0c1cbc67aac8a8e1d7b05546749273c12671e89953bb477b7053d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56a1b16accc0c1cbc67aac8a8e1d7b05546749273c12671e89953bb477b7053d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56a1b16accc0c1cbc67aac8a8e1d7b05546749273c12671e89953bb477b7053d", kill_on_drop: false }`
[INFO] [stdout] 56a1b16accc0c1cbc67aac8a8e1d7b05546749273c12671e89953bb477b7053d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75e4092ef019291b37650c5be9402820dc7e23e1a28dd69a60fc4cb100915222
[INFO] running `Command { std: "docker" "start" "-a" "75e4092ef019291b37650c5be9402820dc7e23e1a28dd69a60fc4cb100915222", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking ur20 v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/util.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     (1 << bit)
[INFO] [stdout]    |     ^        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -     (1 << bit)
[INFO] [stdout] 23 +     1 << bit
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |         mA0To20       => (factor * v / 20.0),
[INFO] [stdout]    |                          ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -         mA0To20       => (factor * v / 20.0),
[INFO] [stdout] 61 +         mA0To20       => factor * v / 20.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:62:26
[INFO] [stdout]    |
[INFO] [stdout] 62 |         mA4To20       => (factor * (v - 4.0) / 16.0),
[INFO] [stdout]    |                          ^                         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 62 -         mA4To20       => (factor * (v - 4.0) / 16.0),
[INFO] [stdout] 62 +         mA4To20       => factor * (v - 4.0) / 16.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:64:26
[INFO] [stdout]    |
[INFO] [stdout] 64 |         VMinus10To10  => (factor * v / 10.0),
[INFO] [stdout]    |                          ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 64 -         VMinus10To10  => (factor * v / 10.0),
[INFO] [stdout] 64 +         VMinus10To10  => factor * v / 10.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |         VMinus5To5    => (factor * v / 5.0),
[INFO] [stdout]    |                          ^                ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 66 -         VMinus5To5    => (factor * v / 5.0),
[INFO] [stdout] 66 +         VMinus5To5    => factor * v / 5.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:67:26
[INFO] [stdout]    |
[INFO] [stdout] 67 |         V1To5         => (factor * (v - 1.0) / 4.0),
[INFO] [stdout]    |                          ^                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 67 -         V1To5         => (factor * (v - 1.0) / 4.0),
[INFO] [stdout] 67 +         V1To5         => factor * (v - 1.0) / 4.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:68:26
[INFO] [stdout]    |
[INFO] [stdout] 68 |         V2To10        => (factor * (v - 2.0) / 8.0),
[INFO] [stdout]    |                          ^                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 68 -         V2To10        => (factor * (v - 2.0) / 8.0),
[INFO] [stdout] 68 +         V2To10        => factor * (v - 2.0) / 8.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/util.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     (1 << bit)
[INFO] [stdout]    |     ^        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -     (1 << bit)
[INFO] [stdout] 23 +     1 << bit
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |         mA0To20       => (factor * v / 20.0),
[INFO] [stdout]    |                          ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 61 -         mA0To20       => (factor * v / 20.0),
[INFO] [stdout] 61 +         mA0To20       => factor * v / 20.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:62:26
[INFO] [stdout]    |
[INFO] [stdout] 62 |         mA4To20       => (factor * (v - 4.0) / 16.0),
[INFO] [stdout]    |                          ^                         ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 62 -         mA4To20       => (factor * (v - 4.0) / 16.0),
[INFO] [stdout] 62 +         mA4To20       => factor * (v - 4.0) / 16.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:64:26
[INFO] [stdout]    |
[INFO] [stdout] 64 |         VMinus10To10  => (factor * v / 10.0),
[INFO] [stdout]    |                          ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 64 -         VMinus10To10  => (factor * v / 10.0),
[INFO] [stdout] 64 +         VMinus10To10  => factor * v / 10.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |         VMinus5To5    => (factor * v / 5.0),
[INFO] [stdout]    |                          ^                ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 66 -         VMinus5To5    => (factor * v / 5.0),
[INFO] [stdout] 66 +         VMinus5To5    => factor * v / 5.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:67:26
[INFO] [stdout]    |
[INFO] [stdout] 67 |         V1To5         => (factor * (v - 1.0) / 4.0),
[INFO] [stdout]    |                          ^                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 67 -         V1To5         => (factor * (v - 1.0) / 4.0),
[INFO] [stdout] 67 +         V1To5         => factor * (v - 1.0) / 4.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> src/util.rs:68:26
[INFO] [stdout]    |
[INFO] [stdout] 68 |         V2To10        => (factor * (v - 2.0) / 8.0),
[INFO] [stdout]    |                          ^                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 68 -         V2To10        => (factor * (v - 2.0) / 8.0),
[INFO] [stdout] 68 +         V2To10        => factor * (v - 2.0) / 8.0,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.73s
[INFO] running `Command { std: "docker" "inspect" "75e4092ef019291b37650c5be9402820dc7e23e1a28dd69a60fc4cb100915222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75e4092ef019291b37650c5be9402820dc7e23e1a28dd69a60fc4cb100915222", kill_on_drop: false }`
[INFO] [stdout] 75e4092ef019291b37650c5be9402820dc7e23e1a28dd69a60fc4cb100915222