[INFO] fetching crate slimproto 0.1.3...
[INFO] checking slimproto-0.1.3 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate slimproto 0.1.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate slimproto 0.1.3 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded http_header v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efe482cf6304500fca289d47d002b598fa8392f587e585b7463e5b175edd4db0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "efe482cf6304500fca289d47d002b598fa8392f587e585b7463e5b175edd4db0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efe482cf6304500fca289d47d002b598fa8392f587e585b7463e5b175edd4db0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efe482cf6304500fca289d47d002b598fa8392f587e585b7463e5b175edd4db0", kill_on_drop: false }`
[INFO] [stdout] efe482cf6304500fca289d47d002b598fa8392f587e585b7463e5b175edd4db0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2338d55c9d32586de7a0336bcc50aa15965f3be49599f601b0d1c59d1bd6d9fd
[INFO] running `Command { std: "docker" "start" "-a" "2338d55c9d32586de7a0336bcc50aa15965f3be49599f601b0d1c59d1bd6d9fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking http_header v0.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.2
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]     Checking mac_address v1.1.1
[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-1.6.2/src/time/clock.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |         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] [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" "2338d55c9d32586de7a0336bcc50aa15965f3be49599f601b0d1c59d1bd6d9fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2338d55c9d32586de7a0336bcc50aa15965f3be49599f601b0d1c59d1bd6d9fd", kill_on_drop: false }`
[INFO] [stdout] 2338d55c9d32586de7a0336bcc50aa15965f3be49599f601b0d1c59d1bd6d9fd