[INFO] cloning repository https://github.com/almadireddy/ash
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/almadireddy/ash" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falmadireddy%2Fash", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falmadireddy%2Fash'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1340b0f88c26ef4b33dcf21fcf532545f39f8b74
[INFO] checking almadireddy/ash against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falmadireddy%2Fash" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/almadireddy/ash on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/almadireddy/ash
[INFO] finished tweaking git repo https://github.com/almadireddy/ash
[INFO] tweaked toml for git repo https://github.com/almadireddy/ash written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/almadireddy/ash already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aed740ee2c626a90a941d4f2e5f3e1fa666af4faf8d2101e07a624a908773b2d
[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" "aed740ee2c626a90a941d4f2e5f3e1fa666af4faf8d2101e07a624a908773b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aed740ee2c626a90a941d4f2e5f3e1fa666af4faf8d2101e07a624a908773b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed740ee2c626a90a941d4f2e5f3e1fa666af4faf8d2101e07a624a908773b2d", kill_on_drop: false }`
[INFO] [stdout] aed740ee2c626a90a941d4f2e5f3e1fa666af4faf8d2101e07a624a908773b2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b5f7e14f048f0316ad5ecce282e2872fb95a863a8646f3edf319989318ba86f
[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" "1b5f7e14f048f0316ad5ecce282e2872fb95a863a8646f3edf319989318ba86f", kill_on_drop: false }`
[INFO] [stderr]     Checking ash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::os::unix::prelude::*`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::os::unix::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::unix::prelude::*`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::os::unix::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]  --> src/main.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_command(stack: &Vec<String>) -> String {
[INFO] [stdout]   |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/main.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let s = read_command(&stack);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cd`
[INFO] [stdout]   --> src/main.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let cd = env::set_current_dir(p);
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_cd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]  --> src/main.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_command(stack: &Vec<String>) -> String {
[INFO] [stdout]   |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/main.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let s = read_command(&stack);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cd`
[INFO] [stdout]   --> src/main.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let cd = env::set_current_dir(p);
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_cd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "1b5f7e14f048f0316ad5ecce282e2872fb95a863a8646f3edf319989318ba86f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b5f7e14f048f0316ad5ecce282e2872fb95a863a8646f3edf319989318ba86f", kill_on_drop: false }`
[INFO] [stdout] 1b5f7e14f048f0316ad5ecce282e2872fb95a863a8646f3edf319989318ba86f