[INFO] fetching crate peepable 0.1.1...
[INFO] testing peepable-0.1.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate peepable 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate peepable 0.1.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peepable 0.1.1
[INFO] finished tweaking crates.io crate peepable 0.1.1
[INFO] tweaked toml for crates.io crate peepable 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", 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] ae8906016608ad37f781f853a70f807dd9ffb5c4919985c72eef6be9660e79b2
[INFO] running `Command { std: "docker" "start" "-a" "ae8906016608ad37f781f853a70f807dd9ffb5c4919985c72eef6be9660e79b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae8906016608ad37f781f853a70f807dd9ffb5c4919985c72eef6be9660e79b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae8906016608ad37f781f853a70f807dd9ffb5c4919985c72eef6be9660e79b2", kill_on_drop: false }`
[INFO] [stdout] ae8906016608ad37f781f853a70f807dd9ffb5c4919985c72eef6be9660e79b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 1e12e354e34e257733abd1e62a592d38ddc0189f34b51a5385a79336854219a4
[INFO] running `Command { std: "docker" "start" "-a" "1e12e354e34e257733abd1e62a592d38ddc0189f34b51a5385a79336854219a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling peepable v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "1e12e354e34e257733abd1e62a592d38ddc0189f34b51a5385a79336854219a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e12e354e34e257733abd1e62a592d38ddc0189f34b51a5385a79336854219a4", kill_on_drop: false }`
[INFO] [stdout] 1e12e354e34e257733abd1e62a592d38ddc0189f34b51a5385a79336854219a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd4ed7804d2cd64d83a196b39e329e737076575f70031dbb0466777c29275be1
[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" "dd4ed7804d2cd64d83a196b39e329e737076575f70031dbb0466777c29275be1", kill_on_drop: false }`
[INFO] [stderr]    Compiling peepable v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:149:34
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let iter = Peepable::new((0..4));
[INFO] [stdout]     |                                  ^    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 149 -         let iter = Peepable::new((0..4));
[INFO] [stdout] 149 +         let iter = Peepable::new(0..4);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.52s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/peepable-33c82278b6928d15)
[INFO] [stderr]   Executable tests/peepable.rs (/opt/rustwide/target/debug/deps/peepable-7f54c0cf525a136e)
[INFO] running `Command { std: "docker" "inspect" "dd4ed7804d2cd64d83a196b39e329e737076575f70031dbb0466777c29275be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd4ed7804d2cd64d83a196b39e329e737076575f70031dbb0466777c29275be1", kill_on_drop: false }`
[INFO] [stdout] dd4ed7804d2cd64d83a196b39e329e737076575f70031dbb0466777c29275be1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 74775ce11ec5beb8e80f166215faedbc25ea4b3b5491539b33371363ae41ff1b
[INFO] running `Command { std: "docker" "start" "-a" "74775ce11ec5beb8e80f166215faedbc25ea4b3b5491539b33371363ae41ff1b", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/lib.rs:149:34
[INFO] [stderr]     |
[INFO] [stderr] 149 |         let iter = Peepable::new((0..4));
[INFO] [stderr]     |                                  ^    ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 149 -         let iter = Peepable::new((0..4));
[INFO] [stderr] 149 +         let iter = Peepable::new(0..4);
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `peepable` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/peepable-33c82278b6928d15)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::basic_iterator ... ok
[INFO] [stdout] test tests::basic_peeping ... ok
[INFO] [stdout] test tests::has_iterator_tools ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/peepable.rs (/opt/rustwide/target/debug/deps/peepable-7f54c0cf525a136e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::peep_correctly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests peepable
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - Peepable<I>::new (line 71) ... ok
[INFO] [stdout] test src/lib.rs - Peepable<I>::peep (line 92) ... ok
[INFO] [stdout] test src/lib.rs - Peepable (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "74775ce11ec5beb8e80f166215faedbc25ea4b3b5491539b33371363ae41ff1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74775ce11ec5beb8e80f166215faedbc25ea4b3b5491539b33371363ae41ff1b", kill_on_drop: false }`
[INFO] [stdout] 74775ce11ec5beb8e80f166215faedbc25ea4b3b5491539b33371363ae41ff1b