[INFO] fetching crate proconlib 0.1.0...
[INFO] testing proconlib-0.1.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate proconlib 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate proconlib 0.1.0
[INFO] finished tweaking crates.io crate proconlib 0.1.0
[INFO] tweaked toml for crates.io crate proconlib 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate proconlib 0.1.0 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad0efb4d47324237a167627c5fe94b01deecc6ea7f3e70785a4a57975182bfaa
[INFO] running `Command { std: "docker" "start" "-a" "ad0efb4d47324237a167627c5fe94b01deecc6ea7f3e70785a4a57975182bfaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad0efb4d47324237a167627c5fe94b01deecc6ea7f3e70785a4a57975182bfaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad0efb4d47324237a167627c5fe94b01deecc6ea7f3e70785a4a57975182bfaa", kill_on_drop: false }`
[INFO] [stdout] ad0efb4d47324237a167627c5fe94b01deecc6ea7f3e70785a4a57975182bfaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 485cc793fad103308f30b089bfe69570f0b5ee084f4025be3478ce78486f3db2
[INFO] running `Command { std: "docker" "start" "-a" "485cc793fad103308f30b089bfe69570f0b5ee084f4025be3478ce78486f3db2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proconlib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/bit.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |             self.bits[(x as usize)] += w;
[INFO] [stdout]    |                       ^          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 24 -             self.bits[(x as usize)] += w;
[INFO] [stdout] 24 +             self.bits[x as usize ] += w;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/bit.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |             self.bits[(x as usize)] -= w;
[INFO] [stdout]    |                       ^          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 32 -             self.bits[(x as usize)] -= w;
[INFO] [stdout] 32 +             self.bits[x as usize ] -= w;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "485cc793fad103308f30b089bfe69570f0b5ee084f4025be3478ce78486f3db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "485cc793fad103308f30b089bfe69570f0b5ee084f4025be3478ce78486f3db2", kill_on_drop: false }`
[INFO] [stdout] 485cc793fad103308f30b089bfe69570f0b5ee084f4025be3478ce78486f3db2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da8ad1c2a4f98d62df568f12de110865391938601941ad92cb57bbfcaf6c9d8a
[INFO] running `Command { std: "docker" "start" "-a" "da8ad1c2a4f98d62df568f12de110865391938601941ad92cb57bbfcaf6c9d8a", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/bit.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |             self.bits[(x as usize)] += w;
[INFO] [stdout]    |                       ^          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 24 -             self.bits[(x as usize)] += w;
[INFO] [stdout] 24 +             self.bits[x as usize ] += w;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/bit.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |             self.bits[(x as usize)] -= w;
[INFO] [stdout]    |                       ^          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 32 -             self.bits[(x as usize)] -= w;
[INFO] [stdout] 32 +             self.bits[x as usize ] -= w;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proconlib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/bit.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |             self.bits[(x as usize)] += w;
[INFO] [stdout]    |                       ^          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 24 -             self.bits[(x as usize)] += w;
[INFO] [stdout] 24 +             self.bits[x as usize ] += w;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/bit.rs:32:23
[INFO] [stdout]    |
[INFO] [stdout] 32 |             self.bits[(x as usize)] -= w;
[INFO] [stdout]    |                       ^          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 32 -             self.bits[(x as usize)] -= w;
[INFO] [stdout] 32 +             self.bits[x as usize ] -= w;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "da8ad1c2a4f98d62df568f12de110865391938601941ad92cb57bbfcaf6c9d8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da8ad1c2a4f98d62df568f12de110865391938601941ad92cb57bbfcaf6c9d8a", kill_on_drop: false }`
[INFO] [stdout] da8ad1c2a4f98d62df568f12de110865391938601941ad92cb57bbfcaf6c9d8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e1d93048ff2cd131fdbb66f2f71320891a73dd889db1e72504d767941dace843
[INFO] running `Command { std: "docker" "start" "-a" "e1d93048ff2cd131fdbb66f2f71320891a73dd889db1e72504d767941dace843", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]   --> src/bit.rs:24:23
[INFO] [stderr]    |
[INFO] [stderr] 24 |             self.bits[(x as usize)] += w;
[INFO] [stderr]    |                       ^          ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 24 -             self.bits[(x as usize)] += w;
[INFO] [stderr] 24 +             self.bits[x as usize ] += w;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]   --> src/bit.rs:32:23
[INFO] [stderr]    |
[INFO] [stderr] 32 |             self.bits[(x as usize)] -= w;
[INFO] [stderr]    |                       ^          ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 32 -             self.bits[(x as usize)] -= w;
[INFO] [stderr] 32 +             self.bits[x as usize ] -= w;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `proconlib` (lib) generated 2 warnings (run `cargo fix --lib -p proconlib` to apply 2 suggestions)
[INFO] [stderr] warning: `proconlib` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/proconlib-5c50c613fbb9c502)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test bit::tests::bit_test ... ok
[INFO] [stdout] test union_find::tests::union_find_test ... ok
[INFO] [stdout] test max_flow::tests::max_match_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests proconlib
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/bit.rs:24:23
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 24 |             self.bits[(x as usize)] += w;
[INFO] [stdout] 
[INFO] [stderr]    |                       ^          ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 24 -             self.bits[(x as usize)] += w;
[INFO] [stderr] 24 +             self.bits[x as usize ] += w;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]   --> src/bit.rs:32:23
[INFO] [stderr]    |
[INFO] [stderr] 32 |             self.bits[(x as usize)] -= w;
[INFO] [stderr]    |                       ^          ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 32 -             self.bits[(x as usize)] -= w;
[INFO] [stderr] 32 +             self.bits[x as usize ] -= w;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "e1d93048ff2cd131fdbb66f2f71320891a73dd889db1e72504d767941dace843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1d93048ff2cd131fdbb66f2f71320891a73dd889db1e72504d767941dace843", kill_on_drop: false }`
[INFO] [stdout] e1d93048ff2cd131fdbb66f2f71320891a73dd889db1e72504d767941dace843