[INFO] fetching crate map_for 0.3.0...
[INFO] testing map_for-0.3.0 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate map_for 0.3.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate map_for 0.3.0 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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-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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0ceeb0d0ed39a7aed6b78364be2be040496cc2ca9cc4861850fcca4d03e01ee
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d0ceeb0d0ed39a7aed6b78364be2be040496cc2ca9cc4861850fcca4d03e01ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0ceeb0d0ed39a7aed6b78364be2be040496cc2ca9cc4861850fcca4d03e01ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0ceeb0d0ed39a7aed6b78364be2be040496cc2ca9cc4861850fcca4d03e01ee", kill_on_drop: false }`
[INFO] [stdout] d0ceeb0d0ed39a7aed6b78364be2be040496cc2ca9cc4861850fcca4d03e01ee
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fe9579126b4a3ead4940f72977f06b5673df28fddee1cd00f6e43d4b7a1e1346
[INFO] running `Command { std: "docker" "start" "-a" "fe9579126b4a3ead4940f72977f06b5673df28fddee1cd00f6e43d4b7a1e1346", kill_on_drop: false }`
[INFO] [stderr]    Compiling map_for v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "fe9579126b4a3ead4940f72977f06b5673df28fddee1cd00f6e43d4b7a1e1346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe9579126b4a3ead4940f72977f06b5673df28fddee1cd00f6e43d4b7a1e1346", kill_on_drop: false }`
[INFO] [stdout] fe9579126b4a3ead4940f72977f06b5673df28fddee1cd00f6e43d4b7a1e1346
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0fdf11f1c03d345afcc38eb43a8aa0a479c40a069b0e65ea1290b93028124f8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f0fdf11f1c03d345afcc38eb43a8aa0a479c40a069b0e65ea1290b93028124f8", 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]     |             ^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[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]     |             ^^^^^^^^^ help: remove these braces
[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]     |             ^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "f0fdf11f1c03d345afcc38eb43a8aa0a479c40a069b0e65ea1290b93028124f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0fdf11f1c03d345afcc38eb43a8aa0a479c40a069b0e65ea1290b93028124f8", kill_on_drop: false }`
[INFO] [stdout] f0fdf11f1c03d345afcc38eb43a8aa0a479c40a069b0e65ea1290b93028124f8
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 869bfe475bab31ee75778c0c63da930a1c7fde2fec7f7fa88fd643ac5da18cc8
[INFO] running `Command { std: "docker" "start" "-a" "869bfe475bab31ee75778c0c63da930a1c7fde2fec7f7fa88fd643ac5da18cc8", 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]     |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[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]     |             ^^^^^^^^^ help: remove these braces
[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]     |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: `map_for` (lib test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/map_for-badc61fd384e393c)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::capture ... ok
[INFO] [stdout] test tests::filtering ... ok
[INFO] [stdout] test tests::filtering_options ... ok
[INFO] [stdout] test tests::filtering_borrow ... 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 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests map_for
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/lib.rs - FlatMap (line 36) ... ok
[INFO] [stdout] test src/lib.rs - (line 22) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 202) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 168) ... ok
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/lib.rs - Filter (line 64) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 148) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 105) ... 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] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.99s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "869bfe475bab31ee75778c0c63da930a1c7fde2fec7f7fa88fd643ac5da18cc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "869bfe475bab31ee75778c0c63da930a1c7fde2fec7f7fa88fd643ac5da18cc8", kill_on_drop: false }`
[INFO] [stdout] 869bfe475bab31ee75778c0c63da930a1c7fde2fec7f7fa88fd643ac5da18cc8