[INFO] fetching crate task_runner 0.0.1...
[INFO] checking task_runner-0.0.1 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate task_runner 0.0.1 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate task_runner 0.0.1 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate task_runner 0.0.1
[INFO] finished tweaking crates.io crate task_runner 0.0.1
[INFO] tweaked toml for crates.io crate task_runner 0.0.1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e80b8b75ad2bd04c8ae81cadce6f8526f061faf8cdddb6e04653bd37c9811bde
[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" "e80b8b75ad2bd04c8ae81cadce6f8526f061faf8cdddb6e04653bd37c9811bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e80b8b75ad2bd04c8ae81cadce6f8526f061faf8cdddb6e04653bd37c9811bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e80b8b75ad2bd04c8ae81cadce6f8526f061faf8cdddb6e04653bd37c9811bde", kill_on_drop: false }`
[INFO] [stdout] e80b8b75ad2bd04c8ae81cadce6f8526f061faf8cdddb6e04653bd37c9811bde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6927b479805708a36d42c82e0b5b36f569c6f9dfd51e1cecf3ca8b05bf217aa6
[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" "6927b479805708a36d42c82e0b5b36f569c6f9dfd51e1cecf3ca8b05bf217aa6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking task_runner v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking assert_cmd v0.10.2
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> tests/tr.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::process::Command;  // Run programs
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `assert_cmd::prelude::*`
[INFO] [stdout]  --> tests/tr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use assert_cmd::prelude::*; // Add methods on commands
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.61s
[INFO] running `Command { std: "docker" "inspect" "6927b479805708a36d42c82e0b5b36f569c6f9dfd51e1cecf3ca8b05bf217aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6927b479805708a36d42c82e0b5b36f569c6f9dfd51e1cecf3ca8b05bf217aa6", kill_on_drop: false }`
[INFO] [stdout] 6927b479805708a36d42c82e0b5b36f569c6f9dfd51e1cecf3ca8b05bf217aa6