[INFO] fetching crate collect_slice 1.2.0...
[INFO] testing collect_slice-1.2.0 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate collect_slice 1.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate collect_slice 1.2.0 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 collect_slice 1.2.0
[INFO] finished tweaking crates.io crate collect_slice 1.2.0
[INFO] tweaked toml for crates.io crate collect_slice 1.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] eeaf144a2af2beaafbab036b1a11692996e6be6daa9846148d506d01e716924c
[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" "eeaf144a2af2beaafbab036b1a11692996e6be6daa9846148d506d01e716924c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eeaf144a2af2beaafbab036b1a11692996e6be6daa9846148d506d01e716924c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeaf144a2af2beaafbab036b1a11692996e6be6daa9846148d506d01e716924c", kill_on_drop: false }`
[INFO] [stdout] eeaf144a2af2beaafbab036b1a11692996e6be6daa9846148d506d01e716924c
[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] c4cb188dd5491ca5b533e6508d1f75f68bc0408ef1a3e3c44d1fbc89843c434e
[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" "c4cb188dd5491ca5b533e6508d1f75f68bc0408ef1a3e3c44d1fbc89843c434e", kill_on_drop: false }`
[INFO] [stderr]    Compiling collect_slice v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "c4cb188dd5491ca5b533e6508d1f75f68bc0408ef1a3e3c44d1fbc89843c434e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4cb188dd5491ca5b533e6508d1f75f68bc0408ef1a3e3c44d1fbc89843c434e", kill_on_drop: false }`
[INFO] [stdout] c4cb188dd5491ca5b533e6508d1f75f68bc0408ef1a3e3c44d1fbc89843c434e
[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] [stdout] 5b9081222c9ac81f48e0a7bf8a347e214f1c49a3f3264b3cc82a3051d926c00d
[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" "5b9081222c9ac81f48e0a7bf8a347e214f1c49a3f3264b3cc82a3051d926c00d", kill_on_drop: false }`
[INFO] [stderr]    Compiling collect_slice v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:314:22
[INFO] [stdout]     |
[INFO] [stdout] 314 |         let it: &mut Iterator<Item=_> = &mut (0..5).map(|i| {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=_>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:317:22
[INFO] [stdout]     |
[INFO] [stdout] 317 |         let count = <Iterator<Item=_> as CollectSlice>::collect_slice(it, &mut buf[..]);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=_>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5b9081222c9ac81f48e0a7bf8a347e214f1c49a3f3264b3cc82a3051d926c00d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b9081222c9ac81f48e0a7bf8a347e214f1c49a3f3264b3cc82a3051d926c00d", kill_on_drop: false }`
[INFO] [stdout] 5b9081222c9ac81f48e0a7bf8a347e214f1c49a3f3264b3cc82a3051d926c00d
[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] 5bf0e8c5ea6f42a7c8ba2be5764b178d5ffc24a7579db38ae2ed4dc1e06bc0ab
[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" "5bf0e8c5ea6f42a7c8ba2be5764b178d5ffc24a7579db38ae2ed4dc1e06bc0ab", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:314:22
[INFO] [stderr]     |
[INFO] [stderr] 314 |         let it: &mut Iterator<Item=_> = &mut (0..5).map(|i| {
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=_>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:317:22
[INFO] [stderr]     |
[INFO] [stderr] 317 |         let count = <Iterator<Item=_> as CollectSlice>::collect_slice(it, &mut buf[..]);
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=_>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/collect_slice-08f92996bd625eac)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test test::test_basic ... ok
[INFO] [stdout] test test::test_checked ... ok
[INFO] [stdout] test test::test_exhaust ... ok
[INFO] [stdout] test test::test_over ... ok
[INFO] [stdout] test test::test_under ... ok
[INFO] [stdout] test test::test_filled ... ok
[INFO] [stdout] test test::test_checked_over ... ok
[INFO] [stdout] test test::test_unsized ... ok
[INFO] [stdout] test test::test_checked_under ... ok
[INFO] [stdout] test test::test_filled_under ... ok
[INFO] [stderr]    Doc-tests collect_slice
[INFO] [stdout] test test::test_exhaust_over ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/lib.rs - CollectSlice::collect_slice_checked (line 144) ... ok
[INFO] [stdout] test src/lib.rs - (line 38) ... ok
[INFO] [stdout] test src/lib.rs - CollectSlice::collect_slice_exhaust (line 115) ... ok
[INFO] [stdout] test src/lib.rs - (line 44) ... ok
[INFO] [stdout] test src/lib.rs - (line 14) ... ok
[INFO] [stdout] test src/lib.rs - CollectSlice::collect_slice_checked (line 152) ... ok
[INFO] [stdout] test src/lib.rs - CollectSlice::collect_slice_checked (line 159) ... ok
[INFO] [stdout] test src/lib.rs - CollectSlice::collect_slice_fill (line 92) ... ok
[INFO] [stdout] test src/lib.rs - CollectSlice::collect_slice (line 57) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5bf0e8c5ea6f42a7c8ba2be5764b178d5ffc24a7579db38ae2ed4dc1e06bc0ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bf0e8c5ea6f42a7c8ba2be5764b178d5ffc24a7579db38ae2ed4dc1e06bc0ab", kill_on_drop: false }`
[INFO] [stdout] 5bf0e8c5ea6f42a7c8ba2be5764b178d5ffc24a7579db38ae2ed4dc1e06bc0ab