[INFO] fetching crate no_std_io 0.6.0...
[INFO] testing no_std_io-0.6.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate no_std_io 0.6.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate no_std_io 0.6.0
[INFO] finished tweaking crates.io crate no_std_io 0.6.0
[INFO] tweaked toml for crates.io crate no_std_io 0.6.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate no_std_io 0.6.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 396a6970d29b269f90afdff67694f35fdce9f03855d6b6f758fc5c0726ed7244
[INFO] running `Command { std: "docker" "start" "-a" "396a6970d29b269f90afdff67694f35fdce9f03855d6b6f758fc5c0726ed7244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "396a6970d29b269f90afdff67694f35fdce9f03855d6b6f758fc5c0726ed7244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "396a6970d29b269f90afdff67694f35fdce9f03855d6b6f758fc5c0726ed7244", kill_on_drop: false }`
[INFO] [stdout] 396a6970d29b269f90afdff67694f35fdce9f03855d6b6f758fc5c0726ed7244
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b43ddc1327acaf8dd143d40d04683089333b8e17a033d5145920f22cf61a6a4
[INFO] running `Command { std: "docker" "start" "-a" "4b43ddc1327acaf8dd143d40d04683089333b8e17a033d5145920f22cf61a6a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling no_std_io v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "4b43ddc1327acaf8dd143d40d04683089333b8e17a033d5145920f22cf61a6a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b43ddc1327acaf8dd143d40d04683089333b8e17a033d5145920f22cf61a6a4", kill_on_drop: false }`
[INFO] [stdout] 4b43ddc1327acaf8dd143d40d04683089333b8e17a033d5145920f22cf61a6a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f307bf9cb67bc7ac91d46ae8dd2ce3d50e2ea30ae31ca2831b97a991bc4978c5
[INFO] running `Command { std: "docker" "start" "-a" "f307bf9cb67bc7ac91d46ae8dd2ce3d50e2ea30ae31ca2831b97a991bc4978c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling no_std_io v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ExampleSliceReader` is never constructed
[INFO] [stdout]    --> tests/tests.rs:286:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | struct ExampleSliceReader<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "f307bf9cb67bc7ac91d46ae8dd2ce3d50e2ea30ae31ca2831b97a991bc4978c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f307bf9cb67bc7ac91d46ae8dd2ce3d50e2ea30ae31ca2831b97a991bc4978c5", kill_on_drop: false }`
[INFO] [stdout] f307bf9cb67bc7ac91d46ae8dd2ce3d50e2ea30ae31ca2831b97a991bc4978c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2cd9bdfcc6df4c1a845e7c54a9b50fe92c9a6867932e9446148e70687576d54f
[INFO] running `Command { std: "docker" "start" "-a" "2cd9bdfcc6df4c1a845e7c54a9b50fe92c9a6867932e9446148e70687576d54f", kill_on_drop: false }`
[INFO] [stderr] warning: struct `ExampleSliceReader` is never constructed
[INFO] [stderr]    --> tests/tests.rs:286:8
[INFO] [stderr]     |
[INFO] [stderr] 286 | struct ExampleSliceReader<'a> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `no_std_io` (test "tests") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/no_std_io-2ebb0b3fc030d310)
[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] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-713daf139a484820)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test read_exact ... ok
[INFO] [stdout] test chain_bufread ... ok
[INFO] [stdout] test test_writer_read_from_one_buf ... ok
[INFO] [stdout] test read_exact_slice ... ok
[INFO] [stdout] test take_eof ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests no_std_io
[INFO] [stdout] 
[INFO] [stdout] running 40 tests
[INFO] [stdout] test src/io/traits.rs - io::traits::BufRead (line 937) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::BufRead (line 957) - compile ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::get_ref (line 114) ... ok
[INFO] [stdout] test src/error.rs - error::Error::source (line 41) ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::into_inner (line 360) ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Result (line 26) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Chain<T,U>::get_mut (line 1102) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::BufRead::fill_buf (line 997) - compile ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::kind (line 402) ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::into_inner (line 97) ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::from (line 239) ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor (line 25) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read (line 107) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Chain<T,U>::into_inner (line 1054) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Chain<T,U>::get_ref (line 1076) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::read (line 208) - compile ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::set_position (line 173) ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::get_ref (line 313) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::chain (line 462) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read (line 134) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::read_exact (line 337) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::bytes (line 429) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Seek (line 846) - compile ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::get_mut (line 134) ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::take (line 506) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::set_limit (line 1222) - compile ... ok
[INFO] [stdout] test src/io/error.rs - io::error::Error::new (line 285) ... 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::Take<T>::into_inner (line 1246) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write (line 592) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::write_all (line 706) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::get_mut (line 1298) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::write_fmt (line 754) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::by_ref (line 812) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Read::by_ref (line 384) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::limit (line 1196) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::write (line 645) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Write::flush (line 671) - compile ... ok
[INFO] [stdout] test src/io/traits.rs - io::traits::Take<T>::get_ref (line 1270) - compile ... ok
[INFO] [stdout] test src/io/cursor.rs - io::cursor::Cursor<T>::new (line 82) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 40 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.18s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2cd9bdfcc6df4c1a845e7c54a9b50fe92c9a6867932e9446148e70687576d54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd9bdfcc6df4c1a845e7c54a9b50fe92c9a6867932e9446148e70687576d54f", kill_on_drop: false }`
[INFO] [stdout] 2cd9bdfcc6df4c1a845e7c54a9b50fe92c9a6867932e9446148e70687576d54f