[INFO] fetching crate read_collection 0.1.5...
[INFO] testing read_collection-0.1.5 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate read_collection 0.1.5 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate read_collection 0.1.5
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate read_collection 0.1.5
[INFO] tweaked toml for crates.io crate read_collection 0.1.5 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate read_collection 0.1.5 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate read_collection 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fc6b93767cf1e9a81a3a82f753013f9f4361db367401955d369dde97a882e35
[INFO] running `Command { std: "docker" "start" "-a" "5fc6b93767cf1e9a81a3a82f753013f9f4361db367401955d369dde97a882e35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fc6b93767cf1e9a81a3a82f753013f9f4361db367401955d369dde97a882e35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fc6b93767cf1e9a81a3a82f753013f9f4361db367401955d369dde97a882e35", kill_on_drop: false }`
[INFO] [stdout] 5fc6b93767cf1e9a81a3a82f753013f9f4361db367401955d369dde97a882e35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7aefa40aa7806c09f35a4f4cc6b52dc7c2305625619147948291dde0a66d0a60
[INFO] running `Command { std: "docker" "start" "-a" "7aefa40aa7806c09f35a4f4cc6b52dc7c2305625619147948291dde0a66d0a60", kill_on_drop: false }`
[INFO] [stderr]    Compiling read_collection v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "7aefa40aa7806c09f35a4f4cc6b52dc7c2305625619147948291dde0a66d0a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aefa40aa7806c09f35a4f4cc6b52dc7c2305625619147948291dde0a66d0a60", kill_on_drop: false }`
[INFO] [stdout] 7aefa40aa7806c09f35a4f4cc6b52dc7c2305625619147948291dde0a66d0a60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31f39421efc5e9a71184fd94c435170d395e613989510ab2d27c7f8f72ff946a
[INFO] running `Command { std: "docker" "start" "-a" "31f39421efc5e9a71184fd94c435170d395e613989510ab2d27c7f8f72ff946a", kill_on_drop: false }`
[INFO] [stderr]    Compiling read_collection v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "31f39421efc5e9a71184fd94c435170d395e613989510ab2d27c7f8f72ff946a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f39421efc5e9a71184fd94c435170d395e613989510ab2d27c7f8f72ff946a", kill_on_drop: false }`
[INFO] [stdout] 31f39421efc5e9a71184fd94c435170d395e613989510ab2d27c7f8f72ff946a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 459af6f79a47495449e58b0204f39b86412230dc5314d65717a822b107545d29
[INFO] running `Command { std: "docker" "start" "-a" "459af6f79a47495449e58b0204f39b86412230dc5314d65717a822b107545d29", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/read_collection-368bf51d478eeeb9)
[INFO] [stdout] 
[INFO] [stdout] running 42 tests
[INFO] [stdout] test read_back::buf_read_backer::buffer::tests::partially_filled_buffer ... ok
[INFO] [stdout] test read_back::buf_read_backer::buffer::tests::empty_buffer ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_bytes::empty_data ... ok
[INFO] [stdout] test read_back::buf_read_backer::tests::small_capacity ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_chain::empty_chain ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_bytes::general ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_chain::first_and_second_half ... ok
[INFO] [stdout] test read_back::buf_read_backer::tests::general ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_chain::second_chain_full ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_line::new_line_in_beginning ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_chain::first_chain_full ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_lines::no_new_lines ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_line::no_new_line ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_line::new_line_in_between ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_lines::one_new_line_char ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_skip_until::delim_at_the_beginning ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_skip_until::delim_in_between ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_skip_until::until_end ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_split::delim_in_between ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_split::no_delim ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_take::read_back_consume::exceeding_consume ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_take::read_back_fill_buf::exceeding_take_value ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_take::read_back_fill_buf::middle_read_back_fill_buf ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_until::delim_at_the_beginning ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_until::delim_in_between ... ok
[INFO] [stderr]      Running tests/mod.rs (/opt/rustwide/target/debug/deps/mod-b4429a6db4862776)
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::read_back_until::until_end ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::buf_read_back::rev_consume_large_amt ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back::amount_1 ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back::bigger_buffer_than_self ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_exact::buffer_bigger_than_data ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_exact::empty_buf ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back::multiple ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_exact::equal_size ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_exact::normal ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_take::read_back::limit_0 ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_take::read_back::limit_middle ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_take::read_back::no_limit ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_to_end::empty_vec ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_to_end::general ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_to_end::non_empty_vec ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_to_string::empty_data ... ok
[INFO] [stdout] test read_back::impls::u8_slice::tests::read_back::read_back_to_string::general ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 42 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test file::buf_read_backer::buf_reader_vs_buf_read_backer ... ok
[INFO] [stdout] test file::same_as_read::read_exact_vs_rev_read_exact ... ok
[INFO] [stdout] test file::same_as_read::read_to_string_vs_rev_read_to_string ... ok
[INFO] [stdout] test file::same_as_read::read_bytes_vs_rev_read_bytes ... ok
[INFO] [stdout] test file::same_as_read::read_vs_rev_read ... ok
[INFO] [stdout] test file::same_as_read::read_to_end_vs_rev_read_to_end ... ok
[INFO] [stdout] test file::same_as_read::read_chain_vs_rev_read_chain ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests read_collection
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test src/read_back/buf_read_backer/mod.rs - read_back::buf_read_backer::BufReadBacker<R>::with_capacity (line 179) - compile ... ok
[INFO] [stdout] test src/read_back/buf_read_backer/mod.rs - read_back::buf_read_backer::BufReadBacker<R>::get_mut (line 95) - compile ... ok
[INFO] [stdout] test src/read_back/buf_read_backer/mod.rs - read_back::buf_read_backer::BufReadBacker<R>::new (line 162) - compile ... ok
[INFO] [stdout] test src/read_back/buf_read_backer/mod.rs - read_back::buf_read_backer::BufReadBacker (line 14) - compile ... ok
[INFO] [stdout] test src/read_back/buf_read_backer/mod.rs - read_back::buf_read_backer::BufReadBacker<R>::get_ref (line 74) - compile ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBack::read_back_to_end (line 80) - compile ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBack (line 17) - compile ... ok
[INFO] [stdout] test src/read_back/buf_read_backer/mod.rs - read_back::buf_read_backer::BufReadBacker<R>::buffer (line 48) - compile ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBack::read_back_exact (line 127) ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBackChain<T,U>::get_ref (line 442) ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBackChain<T,U>::get_mut (line 470) ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBack::read_back_to_string (line 107) ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBack::read_back_take (line 208) ... ok
[INFO] [stdout] test src/read_back/buf_read_backer/mod.rs - read_back::buf_read_backer::BufReadBacker<R>::capacity (line 114) ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBack::read_back_bytes (line 150) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBack::read_back_chain (line 176) ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBack::read_back (line 46) ... ok
[INFO] [stdout] test src/read_back/mod.rs - read_back::ReadBackChain<T,U>::into_inner (line 418) ... ok
[INFO] [stdout] test src/read_back/buf_read_backer/mod.rs - read_back::buf_read_backer::BufReadBacker<R>::into_inner (line 133) ... ok
[INFO] [stdout] test src/read_back/impls/u8_slice.rs - read_back::impls::u8_slice::&'_[u8]::read_back_consume (line 96) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.38s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "459af6f79a47495449e58b0204f39b86412230dc5314d65717a822b107545d29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "459af6f79a47495449e58b0204f39b86412230dc5314d65717a822b107545d29", kill_on_drop: false }`
[INFO] [stdout] 459af6f79a47495449e58b0204f39b86412230dc5314d65717a822b107545d29