[INFO] crate map_for 0.3.0 is already in cache
[INFO] testing map_for-0.3.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate map_for 0.3.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate map_for 0.3.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fd7b2cc729ca2ee78bec1ceeb802c87cd7b682b59df6a797a777a1e87cadb09
[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" "8fd7b2cc729ca2ee78bec1ceeb802c87cd7b682b59df6a797a777a1e87cadb09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fd7b2cc729ca2ee78bec1ceeb802c87cd7b682b59df6a797a777a1e87cadb09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fd7b2cc729ca2ee78bec1ceeb802c87cd7b682b59df6a797a777a1e87cadb09", kill_on_drop: false }`
[INFO] [stdout] 8fd7b2cc729ca2ee78bec1ceeb802c87cd7b682b59df6a797a777a1e87cadb09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f283575e73d502c132e91103cef8d58ba9b36e1f1d39cf61e34558f1ac3da6d
[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" "9f283575e73d502c132e91103cef8d58ba9b36e1f1d39cf61e34558f1ac3da6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling map_for v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "9f283575e73d502c132e91103cef8d58ba9b36e1f1d39cf61e34558f1ac3da6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f283575e73d502c132e91103cef8d58ba9b36e1f1d39cf61e34558f1ac3da6d", kill_on_drop: false }`
[INFO] [stdout] 9f283575e73d502c132e91103cef8d58ba9b36e1f1d39cf61e34558f1ac3da6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebbe21e246b4687997aa028677d17e2d74e27e68b6676a430b53fcfe09128348
[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" "ebbe21e246b4687997aa028677d17e2d74e27e68b6676a430b53fcfe09128348", 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 0.84s
[INFO] running `Command { std: "docker" "inspect" "ebbe21e246b4687997aa028677d17e2d74e27e68b6676a430b53fcfe09128348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebbe21e246b4687997aa028677d17e2d74e27e68b6676a430b53fcfe09128348", kill_on_drop: false }`
[INFO] [stdout] ebbe21e246b4687997aa028677d17e2d74e27e68b6676a430b53fcfe09128348
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 039d716c5ae84c9e80e04aa477f1ed2b8de7bb56a5e64c632a1a07f2dcdf52a7
[INFO] running `Command { std: "docker" "start" "-a" "039d716c5ae84c9e80e04aa477f1ed2b8de7bb56a5e64c632a1a07f2dcdf52a7", 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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/map_for-0b276eaf1521e501
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::capture ... ok
[INFO] [stdout] test tests::filtering_borrow ... ok
[INFO] [stdout] test tests::filtering_options ... ok
[INFO] [stdout] test tests::regular_binding ... ok
[INFO] [stdout] test tests::mixed_modes ... ok
[INFO] [stdout] test tests::tuple ... ok
[INFO] [stdout] test tests::option ... ok
[INFO] [stderr]    Doc-tests map_for
[INFO] [stdout] test tests::filtering ... ok
[INFO] [stdout] test tests::range ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[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 168) ... ok
[INFO] [stdout] test src/lib.rs - Filter (line 64) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 130) ... ok
[INFO] [stdout] test src/lib.rs - map_for (line 202) ... 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 184) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "039d716c5ae84c9e80e04aa477f1ed2b8de7bb56a5e64c632a1a07f2dcdf52a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "039d716c5ae84c9e80e04aa477f1ed2b8de7bb56a5e64c632a1a07f2dcdf52a7", kill_on_drop: false }`
[INFO] [stdout] 039d716c5ae84c9e80e04aa477f1ed2b8de7bb56a5e64c632a1a07f2dcdf52a7