[INFO] fetching crate rushell 0.1.2...
[INFO] checking rushell-0.1.2 against beta for pr-78714
[INFO] extracting crate rushell 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rushell 0.1.2 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 rushell 0.1.2
[INFO] finished tweaking crates.io crate rushell 0.1.2
[INFO] tweaked toml for crates.io crate rushell 0.1.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate rushell 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 55d151479e79f1535d6a60f7db37d8e446db4a0b2f0847ea0bae900be7618b0a
[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" "55d151479e79f1535d6a60f7db37d8e446db4a0b2f0847ea0bae900be7618b0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55d151479e79f1535d6a60f7db37d8e446db4a0b2f0847ea0bae900be7618b0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55d151479e79f1535d6a60f7db37d8e446db4a0b2f0847ea0bae900be7618b0a", kill_on_drop: false }`
[INFO] [stdout] 55d151479e79f1535d6a60f7db37d8e446db4a0b2f0847ea0bae900be7618b0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6cfe5a79fdf58a86ac504e42863365c252f01643a6f4dfbeac913117f60e0a0a
[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" "6cfe5a79fdf58a86ac504e42863365c252f01643a6f4dfbeac913117f60e0a0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking whoami v0.9.0
[INFO] [stderr]     Checking smallstr v0.2.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.11
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking structopt v0.3.18
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling terminfo v0.7.3
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking mortal v0.2.2
[INFO] [stderr]     Checking rushell_deps_linefeed v0.6.0
[INFO] [stderr]     Checking rushell v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Action`
[INFO] [stdout]  --> src/completion.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Action(String),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Action`
[INFO] [stdout]  --> src/completion.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Action(String),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.66s
[INFO] running `Command { std: "docker" "inspect" "6cfe5a79fdf58a86ac504e42863365c252f01643a6f4dfbeac913117f60e0a0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cfe5a79fdf58a86ac504e42863365c252f01643a6f4dfbeac913117f60e0a0a", kill_on_drop: false }`
[INFO] [stdout] 6cfe5a79fdf58a86ac504e42863365c252f01643a6f4dfbeac913117f60e0a0a