[INFO] fetching crate futures-mockstream 0.1.2...
[INFO] building futures-mockstream-0.1.2 against master#a7f375789bab1a4e4a291c963081a8ca7d2b6bd7 for pr-93180
[INFO] extracting crate futures-mockstream 0.1.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate futures-mockstream 0.1.2 on toolchain a7f375789bab1a4e4a291c963081a8ca7d2b6bd7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-mockstream 0.1.2
[INFO] finished tweaking crates.io crate futures-mockstream 0.1.2
[INFO] tweaked toml for crates.io crate futures-mockstream 0.1.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b769de8b0bcb3cc3bd1fbef70f1a7fc3739517cf5e67e52a7a3ccc5593d15ff3
[INFO] running `Command { std: "docker" "start" "-a" "b769de8b0bcb3cc3bd1fbef70f1a7fc3739517cf5e67e52a7a3ccc5593d15ff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b769de8b0bcb3cc3bd1fbef70f1a7fc3739517cf5e67e52a7a3ccc5593d15ff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b769de8b0bcb3cc3bd1fbef70f1a7fc3739517cf5e67e52a7a3ccc5593d15ff3", kill_on_drop: false }`
[INFO] [stdout] b769de8b0bcb3cc3bd1fbef70f1a7fc3739517cf5e67e52a7a3ccc5593d15ff3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e818f449067e199ee6aa7c8ff570fea871506352d7bb4b6bc1b829f805e62f61
[INFO] running `Command { std: "docker" "start" "-a" "e818f449067e199ee6aa7c8ff570fea871506352d7bb4b6bc1b829f805e62f61", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling futures-io v0.3.19
[INFO] [stderr]    Compiling futures-mockstream v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `from_index`
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     from_index: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `MockStream` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/lib.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[derive(Default, Debug)]
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "e818f449067e199ee6aa7c8ff570fea871506352d7bb4b6bc1b829f805e62f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e818f449067e199ee6aa7c8ff570fea871506352d7bb4b6bc1b829f805e62f61", kill_on_drop: false }`
[INFO] [stdout] e818f449067e199ee6aa7c8ff570fea871506352d7bb4b6bc1b829f805e62f61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fd2935b375daf617b683a77d685253bdca21c74905743485af4149324b2f85a
[INFO] running `Command { std: "docker" "start" "-a" "5fd2935b375daf617b683a77d685253bdca21c74905743485af4149324b2f85a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling libc v0.2.116
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling event-listener v2.5.2
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling parking v1.0.6
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stdout] warning: field is never read: `from_index`
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     from_index: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `MockStream` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/lib.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[derive(Default, Debug)]
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling futures-lite v0.1.11
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling blocking v0.4.7
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling smol v0.1.18
[INFO] [stderr]    Compiling futures-mockstream v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `from_index`
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     from_index: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `MockStream` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/lib.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[derive(Default, Debug)]
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.28s
[INFO] running `Command { std: "docker" "inspect" "5fd2935b375daf617b683a77d685253bdca21c74905743485af4149324b2f85a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd2935b375daf617b683a77d685253bdca21c74905743485af4149324b2f85a", kill_on_drop: false }`
[INFO] [stdout] 5fd2935b375daf617b683a77d685253bdca21c74905743485af4149324b2f85a