[INFO] fetching crate stream_multiplexer 0.16.1...
[INFO] testing stream_multiplexer-0.16.1 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate stream_multiplexer 0.16.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate stream_multiplexer 0.16.1 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stream_multiplexer 0.16.1
[INFO] finished tweaking crates.io crate stream_multiplexer 0.16.1
[INFO] tweaked toml for crates.io crate stream_multiplexer 0.16.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking v1.0.6
[INFO] [stderr]   Downloaded futures-lite v0.1.11
[INFO] [stderr]   Downloaded wepoll-sys-stjepang v1.0.8
[INFO] [stderr]   Downloaded polling v0.1.9
[INFO] [stderr]   Downloaded async-task v3.0.0
[INFO] [stderr]   Downloaded multitask v0.2.0
[INFO] [stderr]   Downloaded async-executor v0.1.2
[INFO] [stderr]   Downloaded sharded-slab v0.0.9
[INFO] [stderr]   Downloaded async-io v0.1.11
[INFO] [stderr]   Downloaded smol v0.3.3
[INFO] [stderr]   Downloaded vec-arena v0.5.2
[INFO] [stderr]   Downloaded blocking v0.5.2
[INFO] [stderr]   Downloaded easy-parallel v3.1.0
[INFO] [stderr]   Downloaded alto_logger v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec4a475455ca9e7de626552372b5e76d402f1ab1c968a0a0ff548848e10d2a0c
[INFO] running `Command { std: "docker" "start" "-a" "ec4a475455ca9e7de626552372b5e76d402f1ab1c968a0a0ff548848e10d2a0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec4a475455ca9e7de626552372b5e76d402f1ab1c968a0a0ff548848e10d2a0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec4a475455ca9e7de626552372b5e76d402f1ab1c968a0a0ff548848e10d2a0c", kill_on_drop: false }`
[INFO] [stdout] ec4a475455ca9e7de626552372b5e76d402f1ab1c968a0a0ff548848e10d2a0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 641ba1e272b1638a008e4e4f2b200ac5c10806b8c275705fd9ef203d28cf982d
[INFO] running `Command { std: "docker" "start" "-a" "641ba1e272b1638a008e4e4f2b200ac5c10806b8c275705fd9ef203d28cf982d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling sharded-slab v0.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling stream_multiplexer v0.16.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0453]: warn(unsafe_code) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 78 | #![forbid(unsafe_code)]
[INFO] [stdout]    |           ----------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 86 |     unsafe_code,
[INFO] [stdout]    |     ^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0453`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stream_multiplexer` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "641ba1e272b1638a008e4e4f2b200ac5c10806b8c275705fd9ef203d28cf982d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "641ba1e272b1638a008e4e4f2b200ac5c10806b8c275705fd9ef203d28cf982d", kill_on_drop: false }`
[INFO] [stdout] 641ba1e272b1638a008e4e4f2b200ac5c10806b8c275705fd9ef203d28cf982d