[INFO] fetching crate read-write-ext 1.0.0...
[INFO] testing read-write-ext-1.0.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate read-write-ext 1.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate read-write-ext 1.0.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate read-write-ext 1.0.0
[INFO] tweaked toml for crates.io crate read-write-ext 1.0.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate read-write-ext 1.0.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate read-write-ext 1.0.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fixed-buffer v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c7f373ff30d2216f681d40de0ce03c22759c3cafd3679ab6971c7b37f51ce07
[INFO] running `Command { std: "docker" "start" "-a" "3c7f373ff30d2216f681d40de0ce03c22759c3cafd3679ab6971c7b37f51ce07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c7f373ff30d2216f681d40de0ce03c22759c3cafd3679ab6971c7b37f51ce07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c7f373ff30d2216f681d40de0ce03c22759c3cafd3679ab6971c7b37f51ce07", kill_on_drop: false }`
[INFO] [stdout] 3c7f373ff30d2216f681d40de0ce03c22759c3cafd3679ab6971c7b37f51ce07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7004fcc5bf15ff7b4decdb1911e01eca1d206ec6e7b50c14f3e1ff6c6a89d06b
[INFO] running `Command { std: "docker" "start" "-a" "7004fcc5bf15ff7b4decdb1911e01eca1d206ec6e7b50c14f3e1ff6c6a89d06b", kill_on_drop: false }`
[INFO] [stderr]    Compiling read-write-ext v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "7004fcc5bf15ff7b4decdb1911e01eca1d206ec6e7b50c14f3e1ff6c6a89d06b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7004fcc5bf15ff7b4decdb1911e01eca1d206ec6e7b50c14f3e1ff6c6a89d06b", kill_on_drop: false }`
[INFO] [stdout] 7004fcc5bf15ff7b4decdb1911e01eca1d206ec6e7b50c14f3e1ff6c6a89d06b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 954bca3b3e4a37ef9ec7ac06cb1f6cba0e42ac8788166ca96b0e6098a1b65094
[INFO] running `Command { std: "docker" "start" "-a" "954bca3b3e4a37ef9ec7ac06cb1f6cba0e42ac8788166ca96b0e6098a1b65094", kill_on_drop: false }`
[INFO] [stderr]    Compiling fixed-buffer v1.0.0
[INFO] [stderr]    Compiling read-write-ext v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "954bca3b3e4a37ef9ec7ac06cb1f6cba0e42ac8788166ca96b0e6098a1b65094", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "954bca3b3e4a37ef9ec7ac06cb1f6cba0e42ac8788166ca96b0e6098a1b65094", kill_on_drop: false }`
[INFO] [stdout] 954bca3b3e4a37ef9ec7ac06cb1f6cba0e42ac8788166ca96b0e6098a1b65094
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 317fa810db5af676232e8424818d98cde875f56041f5fdec8d74efa5ebeba37e
[INFO] running `Command { std: "docker" "start" "-a" "317fa810db5af676232e8424818d98cde875f56041f5fdec8d74efa5ebeba37e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/read_write_ext-0a6762649a0897e4)
[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/chain.rs (/opt/rustwide/target/debug/deps/chain-74198ab290271910)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test doesnt_read_second_when_first_has_data ... ok
[INFO] [stdout] test both_empty ... ok
[INFO] [stdout] test passes_flush_through ... ok
[INFO] [stdout] test passes_write_through ... ok
[INFO] [stdout] test returns_error_from_second ... ok
[INFO] [stdout] test reads_second_when_first_empty ... ok
[INFO] [stdout] test reads_first_then_second ... ok
[INFO] [stderr]      Running tests/take.rs (/opt/rustwide/target/debug/deps/take-7ea0d2443d38c5da)
[INFO] [stdout] test doesnt_read_second_when_first_returns_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test doesnt_call_read_after_len_reached_in_multiple_reads ... ok
[INFO] [stdout] test doesnt_call_read_after_len_reached ... ok
[INFO] [stdout] test exactly_len ... ok
[INFO] [stdout] test empty ... ok
[INFO] [stdout] test doesnt_read_when_zero ... ok
[INFO] [stderr]      Running tests/test_utils.rs (/opt/rustwide/target/debug/deps/test_utils-5a04ed30fcff9d9f)
[INFO] [stdout] test exactly_len_in_multiple_reads ... ok
[INFO] [stdout] test fewer_than_len ... ok
[INFO] [stdout] test fewer_than_len_in_multiple_reads ... ok
[INFO] [stdout] test passes_flush_through ... ok
[INFO] [stdout] test passes_write_through ... ok
[INFO] [stdout] test read_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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] [stderr]    Doc-tests read_write_ext
[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" "317fa810db5af676232e8424818d98cde875f56041f5fdec8d74efa5ebeba37e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "317fa810db5af676232e8424818d98cde875f56041f5fdec8d74efa5ebeba37e", kill_on_drop: false }`
[INFO] [stdout] 317fa810db5af676232e8424818d98cde875f56041f5fdec8d74efa5ebeba37e