[INFO] fetching crate pom-preview 3.0.4-alpha-1...
[INFO] testing pom-preview-3.0.4-alpha-1 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate pom-preview 3.0.4-alpha-1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pom-preview 3.0.4-alpha-1 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pom-preview 3.0.4-alpha-1
[INFO] finished tweaking crates.io crate pom-preview 3.0.4-alpha-1
[INFO] tweaked toml for crates.io crate pom-preview 3.0.4-alpha-1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate pom-preview 3.0.4-alpha-1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 715e991b8fef38dbd661908b3d41182f39512322e6462e809274b34201209389
[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" "715e991b8fef38dbd661908b3d41182f39512322e6462e809274b34201209389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "715e991b8fef38dbd661908b3d41182f39512322e6462e809274b34201209389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "715e991b8fef38dbd661908b3d41182f39512322e6462e809274b34201209389", kill_on_drop: false }`
[INFO] [stdout] 715e991b8fef38dbd661908b3d41182f39512322e6462e809274b34201209389
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 128dc2e00b843b4b0b0c4b9fd5083eb64fc21b5ead52bbf411d28319b0d4a93d
[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" "128dc2e00b843b4b0b0c4b9fd5083eb64fc21b5ead52bbf411d28319b0d4a93d", kill_on_drop: false }`
[INFO] [stderr]    Compiling pom-preview v3.0.4-alpha-1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "128dc2e00b843b4b0b0c4b9fd5083eb64fc21b5ead52bbf411d28319b0d4a93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "128dc2e00b843b4b0b0c4b9fd5083eb64fc21b5ead52bbf411d28319b0d4a93d", kill_on_drop: false }`
[INFO] [stdout] 128dc2e00b843b4b0b0c4b9fd5083eb64fc21b5ead52bbf411d28319b0d4a93d
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--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] b20303b249b90669cd792f4cffa0db5953f5e9eb5c4f395b048c68c16c85ad33
[INFO] running `Command { std: "docker" "start" "-a" "b20303b249b90669cd792f4cffa0db5953f5e9eb5c4f395b048c68c16c85ad33", kill_on_drop: false }`
[INFO] [stderr]    Compiling pom-preview v3.0.4-alpha-1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> examples/whitespace.rs:77:2
[INFO] [stdout]    |
[INFO] [stdout] 77 | /     (
[INFO] [stdout] 78 | |         whitespace() *
[INFO] [stdout] 79 | |         list(
[INFO] [stdout] 80 | |             call(container),
[INFO] [stdout] 81 | |             whitespace()
[INFO] [stdout] 82 | |         )
[INFO] [stdout] 83 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 77 |     whitespace() *
[INFO] [stdout] 78 |         list(
[INFO] [stdout] 79 |             call(container),
[INFO] [stdout] 80 |             whitespace()
[INFO] [stdout] 81 |         )
[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 5.61s
[INFO] running `Command { std: "docker" "inspect" "b20303b249b90669cd792f4cffa0db5953f5e9eb5c4f395b048c68c16c85ad33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b20303b249b90669cd792f4cffa0db5953f5e9eb5c4f395b048c68c16c85ad33", kill_on_drop: false }`
[INFO] [stdout] b20303b249b90669cd792f4cffa0db5953f5e9eb5c4f395b048c68c16c85ad33
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a28d5ff528147e487576722e1ff10aec1f146c1b3fe28dd5f7f3f56ca538eb47
[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" "a28d5ff528147e487576722e1ff10aec1f146c1b3fe28dd5f7f3f56ca538eb47", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stdout] running 7 tests
[INFO] [stderr]   --> examples/whitespace.rs:77:2
[INFO] [stdout] test parser::tests::byte_works ... ok
[INFO] [stderr]    |
[INFO] [stdout] test parser::tests::recursive_parser ... ok
[INFO] [stderr] 77 | /     (
[INFO] [stdout] test parser::tests::chain_parser ... ok
[INFO] [stderr] 78 | |         whitespace() *
[INFO] [stdout] test parser::tests::char_works ... ok
[INFO] [stderr] 79 | |         list(
[INFO] [stdout] test parser::tests::repeat_at_least ... ok
[INFO] [stderr] 80 | |             call(container),
[INFO] [stdout] test parser::tests::repeat_exactly ... ok
[INFO] [stderr] 81 | |             whitespace()
[INFO] [stdout] test parser::tests::repeat_up_to ... ok
[INFO] [stderr] 82 | |         )
[INFO] [stdout] 
[INFO] [stderr] 83 | |     )
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    | |_____^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 77 |     whitespace() *
[INFO] [stderr] 78 |         list(
[INFO] [stderr] 79 |             call(container),
[INFO] [stderr] 80 |             whitespace()
[INFO] [stderr] 81 |         )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pom-15b4e5b6e4cf0e74)
[INFO] [stderr]      Running tests/list.rs (/opt/rustwide/target/debug/deps/list-54d61974725a1e9a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests pom
[INFO] [stdout] test test_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a28d5ff528147e487576722e1ff10aec1f146c1b3fe28dd5f7f3f56ca538eb47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a28d5ff528147e487576722e1ff10aec1f146c1b3fe28dd5f7f3f56ca538eb47", kill_on_drop: false }`
[INFO] [stdout] a28d5ff528147e487576722e1ff10aec1f146c1b3fe28dd5f7f3f56ca538eb47