[INFO] fetching crate slimproto 0.1.3...
[INFO] checking slimproto-0.1.3 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate slimproto 0.1.3 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate slimproto 0.1.3 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slimproto 0.1.3
[INFO] finished tweaking crates.io crate slimproto 0.1.3
[INFO] tweaked toml for crates.io crate slimproto 0.1.3 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mac_address v1.1.1
[INFO] [stderr]   Downloaded http_header v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e95b6f4afb9c87a2bb132043fb4bf078f6de055fd90f65ce5b55b0f81d531cd
[INFO] running `Command { std: "docker" "start" "-a" "9e95b6f4afb9c87a2bb132043fb4bf078f6de055fd90f65ce5b55b0f81d531cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e95b6f4afb9c87a2bb132043fb4bf078f6de055fd90f65ce5b55b0f81d531cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e95b6f4afb9c87a2bb132043fb4bf078f6de055fd90f65ce5b55b0f81d531cd", kill_on_drop: false }`
[INFO] [stdout] 9e95b6f4afb9c87a2bb132043fb4bf078f6de055fd90f65ce5b55b0f81d531cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] add1761b82ac1ac09059f1f7fa84a047f6422f99f3b66c7acf0fec1c25c868e0
[INFO] running `Command { std: "docker" "start" "-a" "add1761b82ac1ac09059f1f7fa84a047f6422f99f3b66c7acf0fec1c25c868e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling mac_address v1.1.1
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking http_header v0.7.0
[INFO] [stderr]    Compiling tokio v1.8.2
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking futures-channel v0.3.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stdout] error[E0425]: cannot find function `yield_now` in module `crate::task`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-1.8.2/src/time/clock.rs:133:22
[INFO] [stdout]     |
[INFO] [stdout] 133 |         crate::task::yield_now().await;
[INFO] [stdout]     |                      ^^^^^^^^^ not found in `crate::task`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout] 31  |     use std::thread::yield_now;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-util v0.3.15
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "add1761b82ac1ac09059f1f7fa84a047f6422f99f3b66c7acf0fec1c25c868e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "add1761b82ac1ac09059f1f7fa84a047f6422f99f3b66c7acf0fec1c25c868e0", kill_on_drop: false }`
[INFO] [stdout] add1761b82ac1ac09059f1f7fa84a047f6422f99f3b66c7acf0fec1c25c868e0