[INFO] cloning repository https://github.com/debruinf/rewind
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/debruinf/rewind" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebruinf%2Frewind", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebruinf%2Frewind'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3bc91ec0c97f0985d9edd0cb5e98a44099873a89
[INFO] testing debruinf/rewind against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebruinf%2Frewind" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/debruinf/rewind on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/debruinf/rewind
[INFO] finished tweaking git repo https://github.com/debruinf/rewind
[INFO] tweaked toml for git repo https://github.com/debruinf/rewind written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/debruinf/rewind already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 888ed0c5ce44d00e4b6330a24e0c97a49dc47335635ac03e335baac92f55d54a
[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" "888ed0c5ce44d00e4b6330a24e0c97a49dc47335635ac03e335baac92f55d54a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "888ed0c5ce44d00e4b6330a24e0c97a49dc47335635ac03e335baac92f55d54a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "888ed0c5ce44d00e4b6330a24e0c97a49dc47335635ac03e335baac92f55d54a", kill_on_drop: false }`
[INFO] [stdout] 888ed0c5ce44d00e4b6330a24e0c97a49dc47335635ac03e335baac92f55d54a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--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] e3457e808e58d2421ecb93725f57d62a1ccca41cdf0d54420512f20d3be1c803
[INFO] running `Command { std: "docker" "start" "-a" "e3457e808e58d2421ecb93725f57d62a1ccca41cdf0d54420512f20d3be1c803", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rewind v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Write`, `stdin`, `stdout`
[INFO] [stdout]  --> src/main.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{stdin,stdout,Write};
[INFO] [stdout]   |               ^^^^^ ^^^^^^ ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let config = set_config(matches);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to_be_deleted_files`
[INFO] [stdout]   --> src/main.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let to_be_deleted_files = collect_files_paths();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_to_be_deleted_files`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]    --> src/main.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let aaa = fs::read_dir("./").iter();
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^       - temporary value is freed at the end of this statement
[INFO] [stdout]     |               |
[INFO] [stdout]     |               creates a temporary which is freed while still in use
[INFO] [stdout] 102 |     println!("{:?}", &aaa)
[INFO] [stdout]     |                      ---- borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rewind` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e3457e808e58d2421ecb93725f57d62a1ccca41cdf0d54420512f20d3be1c803", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3457e808e58d2421ecb93725f57d62a1ccca41cdf0d54420512f20d3be1c803", kill_on_drop: false }`
[INFO] [stdout] e3457e808e58d2421ecb93725f57d62a1ccca41cdf0d54420512f20d3be1c803