[INFO] fetching crate core2 0.3.1...
[INFO] testing core2-0.3.1 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate core2 0.3.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate core2 0.3.1 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate core2 0.3.1
[INFO] finished tweaking crates.io crate core2 0.3.1
[INFO] tweaked toml for crates.io crate core2 0.3.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd8a489f55384267d5e253c32bc48448c5b4b7dd06ddaebf74b00ba22ec3bed0
[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" "bd8a489f55384267d5e253c32bc48448c5b4b7dd06ddaebf74b00ba22ec3bed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd8a489f55384267d5e253c32bc48448c5b4b7dd06ddaebf74b00ba22ec3bed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd8a489f55384267d5e253c32bc48448c5b4b7dd06ddaebf74b00ba22ec3bed0", kill_on_drop: false }`
[INFO] [stdout] bd8a489f55384267d5e253c32bc48448c5b4b7dd06ddaebf74b00ba22ec3bed0
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] ce76321c1e0609bb5fff938c4669df024107275e806e6549e76d3350b37be16c
[INFO] running `Command { std: "docker" "start" "-a" "ce76321c1e0609bb5fff938c4669df024107275e806e6549e76d3350b37be16c", kill_on_drop: false }`
[INFO] [stderr]    Compiling core2 v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "ce76321c1e0609bb5fff938c4669df024107275e806e6549e76d3350b37be16c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce76321c1e0609bb5fff938c4669df024107275e806e6549e76d3350b37be16c", kill_on_drop: false }`
[INFO] [stdout] ce76321c1e0609bb5fff938c4669df024107275e806e6549e76d3350b37be16c
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b9b549edaa3f2f74efb1f56e4ff7597a4857fa81e548f5aebed57733fb28cee
[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" "6b9b549edaa3f2f74efb1f56e4ff7597a4857fa81e548f5aebed57733fb28cee", kill_on_drop: false }`
[INFO] [stderr]    Compiling core2 v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "6b9b549edaa3f2f74efb1f56e4ff7597a4857fa81e548f5aebed57733fb28cee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b9b549edaa3f2f74efb1f56e4ff7597a4857fa81e548f5aebed57733fb28cee", kill_on_drop: false }`
[INFO] [stdout] 6b9b549edaa3f2f74efb1f56e4ff7597a4857fa81e548f5aebed57733fb28cee
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] 540a0e0bf05c99b6001b297003bb51d03de41896ad99041ed960676fd5b61e40
[INFO] running `Command { std: "docker" "start" "-a" "540a0e0bf05c99b6001b297003bb51d03de41896ad99041ed960676fd5b61e40", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/core2-8993b6ead1b481a9)
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-c3150dd71be897cb)
[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] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test chain_bufread ... ok
[INFO] [stdout] test read_exact_slice ... ok
[INFO] [stdout] test read_exact ... ok
[INFO] [stdout] test take_eof ... ok
[INFO] [stdout] test test_writer_read_from_one_buf ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests core2
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test src/error.rs - error::Box<dyn Error>::from (line 267) ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::get_mut (line 134) ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::get_ref (line 114) ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor (line 25) ... ok
[INFO] [stdout] test src/error.rs - error::Box<dyn Error + Send + Sync>::from (line 183) ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::into_inner (line 97) ... ok
[INFO] [stdout] test src/error.rs - error::Box<dyn Error + 'a>::from (line 113) ... ok
[INFO] [stdout] test src/error.rs - error::Box<dyn Error>::from (line 221) ... ok
[INFO] [stdout] test src/error.rs - error::Box<dyn Error + Send + Sync + 'a>::from (line 286) ... ok
[INFO] [stdout] test src/error.rs - error::Box<dyn Error>::from (line 307) ... ok
[INFO] [stdout] test src/error.rs - error::Error::source (line 40) ... ok
[INFO] [stdout] test src/error.rs - error::Box<dyn Error + Send + Sync + 'a>::from (line 244) ... ok
[INFO] [stdout] test src/error.rs - error::Box<dyn Error + Send + Sync + 'a>::from (line 146) ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::new (line 82) ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::set_position (line 173) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::BufRead (line 825) - compile ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::position (line 151) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::BufRead (line 805) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Chain<T, U>::get_ref (line 944) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read (line 53) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::BufRead::fill_buf (line 865) - compile ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::from (line 262) ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::from (line 239) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Chain<T, U>::into_inner (line 922) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read (line 26) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Chain<T, U>::get_mut (line 970) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::by_ref (line 252) - compile ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::get_ref (line 313) ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::new (line 285) ... ok
[INFO] [stdout] test src/io/error.rs - io::error::ErrorKind::from (line 198) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::chain (line 330) - compile ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::into_inner (line 360) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::limit (line 1064) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::bytes (line 297) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::read_exact (line 205) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::read (line 127) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::take (line 374) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Seek (line 714) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::by_ref (line 680) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::into_inner (line 1114) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::get_mut (line 1166) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::set_limit (line 1090) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write (line 460) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::write (line 513) - compile ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Result (line 26) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::write_all (line 574) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::flush (line 539) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::get_ref (line 1138) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::write_fmt (line 622) - compile ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::kind (line 402) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 50 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.48s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "540a0e0bf05c99b6001b297003bb51d03de41896ad99041ed960676fd5b61e40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "540a0e0bf05c99b6001b297003bb51d03de41896ad99041ed960676fd5b61e40", kill_on_drop: false }`
[INFO] [stdout] 540a0e0bf05c99b6001b297003bb51d03de41896ad99041ed960676fd5b61e40