[INFO] fetching crate tokio-reactor 0.1.12...
[INFO] checking tokio-reactor-0.1.12 against beta for pr-78714
[INFO] extracting crate tokio-reactor 0.1.12 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate tokio-reactor 0.1.12 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-reactor 0.1.12
[INFO] finished tweaking crates.io crate tokio-reactor 0.1.12
[INFO] tweaked toml for crates.io crate tokio-reactor 0.1.12 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] 2a2415d6ab14c6362dbe1ae8651e3d3ad96d9bee7a2d57470168d9d0d0fea794
[INFO] running `Command { std: "docker" "start" "-a" "2a2415d6ab14c6362dbe1ae8651e3d3ad96d9bee7a2d57470168d9d0d0fea794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a2415d6ab14c6362dbe1ae8651e3d3ad96d9bee7a2d57470168d9d0d0fea794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a2415d6ab14c6362dbe1ae8651e3d3ad96d9bee7a2d57470168d9d0d0fea794", kill_on_drop: false }`
[INFO] [stdout] 2a2415d6ab14c6362dbe1ae8651e3d3ad96d9bee7a2d57470168d9d0d0fea794
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 948f25ac482843b132aef4c56846b6b29aa8480eb5995e65cdafc2a5e7396b9c
[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" "948f25ac482843b132aef4c56846b6b29aa8480eb5995e65cdafc2a5e7396b9c", kill_on_drop: false }`
[INFO] [stderr]     Checking tokio-reactor v0.1.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-io-pool v0.1.4
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:796:32
[INFO] [stdout]     |
[INFO] [stdout] 796 |         write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/basic.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:796:32
[INFO] [stdout]     |
[INFO] [stdout] 796 |         write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-reactor`
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "948f25ac482843b132aef4c56846b6b29aa8480eb5995e65cdafc2a5e7396b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "948f25ac482843b132aef4c56846b6b29aa8480eb5995e65cdafc2a5e7396b9c", kill_on_drop: false }`
[INFO] [stdout] 948f25ac482843b132aef4c56846b6b29aa8480eb5995e65cdafc2a5e7396b9c