[INFO] fetching crate map_for 0.3.0...
[INFO] testing map_for-0.3.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate map_for 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate map_for 0.3.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate map_for 0.3.0
[INFO] finished tweaking crates.io crate map_for 0.3.0
[INFO] tweaked toml for crates.io crate map_for 0.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d1190eadaf1a3c843cf1b2e69682c6c6a19ac56e97ee9255938bcb68cf32518
[INFO] running `Command { std: "docker" "start" "-a" "9d1190eadaf1a3c843cf1b2e69682c6c6a19ac56e97ee9255938bcb68cf32518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d1190eadaf1a3c843cf1b2e69682c6c6a19ac56e97ee9255938bcb68cf32518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d1190eadaf1a3c843cf1b2e69682c6c6a19ac56e97ee9255938bcb68cf32518", kill_on_drop: false }`
[INFO] [stdout] 9d1190eadaf1a3c843cf1b2e69682c6c6a19ac56e97ee9255938bcb68cf32518
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb39ea529c3cca55a28803f40fce6ddfc4a9cf693503aba03f208fd73c6a8754
[INFO] running `Command { std: "docker" "start" "-a" "cb39ea529c3cca55a28803f40fce6ddfc4a9cf693503aba03f208fd73c6a8754", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling map_for v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.72s
[INFO] running `Command { std: "docker" "inspect" "cb39ea529c3cca55a28803f40fce6ddfc4a9cf693503aba03f208fd73c6a8754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb39ea529c3cca55a28803f40fce6ddfc4a9cf693503aba03f208fd73c6a8754", kill_on_drop: false }`
[INFO] [stdout] cb39ea529c3cca55a28803f40fce6ddfc4a9cf693503aba03f208fd73c6a8754
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a3efe8e276785d84993a23f5a98305a29a492b5d0f8e90879e469ac3b083792
[INFO] running `Command { std: "docker" "start" "-a" "8a3efe8e276785d84993a23f5a98305a29a492b5d0f8e90879e469ac3b083792", kill_on_drop: false }`
[INFO] [stderr]    Compiling map_for v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/lib.rs:342:13
[INFO] [stdout]     |
[INFO] [stdout] 342 |          => { a + b } };
[INFO] [stdout]     |             ^^     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 342 -          => { a + b } };
[INFO] [stdout] 342 +          => a + b };
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/lib.rs:410:13
[INFO] [stdout]     |
[INFO] [stdout] 410 |          => { a + b } };
[INFO] [stdout]     |             ^^     ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 410 -          => { a + b } };
[INFO] [stdout] 410 +          => a + b };
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/lib.rs:416:13
[INFO] [stdout]     |
[INFO] [stdout] 416 |          => { a + b } };
[INFO] [stdout]     |             ^^     ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 416 -          => { a + b } };
[INFO] [stdout] 416 +          => a + b };
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "8a3efe8e276785d84993a23f5a98305a29a492b5d0f8e90879e469ac3b083792", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3efe8e276785d84993a23f5a98305a29a492b5d0f8e90879e469ac3b083792", kill_on_drop: false }`
[INFO] [stdout] 8a3efe8e276785d84993a23f5a98305a29a492b5d0f8e90879e469ac3b083792
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f816323a27dcf16bdf1c4d82dc4c158a54ab374b8bff48c483404ffea09465ae
[INFO] running `Command { std: "docker" "start" "-a" "f816323a27dcf16bdf1c4d82dc4c158a54ab374b8bff48c483404ffea09465ae", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:342:13
[INFO] [stderr]     |
[INFO] [stderr] 342 |          => { a + b } };
[INFO] [stderr]     |             ^^     ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 342 -          => { a + b } };
[INFO] [stderr] 342 +          => a + b };
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:410:13
[INFO] [stderr]     |
[INFO] [stderr] 410 |          => { a + b } };
[INFO] [stderr]     |             ^^     ^^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 410 -          => { a + b } };
[INFO] [stderr] 410 +          => a + b };
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:416:13
[INFO] [stderr]     |
[INFO] [stderr] 416 |          => { a + b } };
[INFO] [stderr]     |             ^^     ^^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 416 -          => { a + b } };
[INFO] [stderr] 416 +          => a + b };
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `map_for` (lib test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/map_for-9d1f2449f5024d90)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::capture ... ok
[INFO] [stdout] test tests::filtering ... ok
[INFO] [stdout] test tests::filtering_borrow ... ok
[INFO] [stdout] test tests::filtering_options ... ok
[INFO] [stdout] test tests::mixed_modes ... ok
[INFO] [stdout] test tests::option ... ok
[INFO] [stdout] test tests::range ... ok
[INFO] [stdout] test tests::regular_binding ... ok
[INFO] [stdout] test tests::tuple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests map_for
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/lib.rs - (line 22) ... ok
[INFO] [stdout] test src/lib.rs - FlatMap (line 36) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 168) ... ok
[INFO] [stdout] test src/lib.rs - Filter (line 64) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 202) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 130) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 184) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 105) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 148) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.41s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f816323a27dcf16bdf1c4d82dc4c158a54ab374b8bff48c483404ffea09465ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f816323a27dcf16bdf1c4d82dc4c158a54ab374b8bff48c483404ffea09465ae", kill_on_drop: false }`
[INFO] [stdout] f816323a27dcf16bdf1c4d82dc4c158a54ab374b8bff48c483404ffea09465ae