[INFO] cloning repository https://github.com/jonathan-lemos/filediff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonathan-lemos/filediff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathan-lemos%2Ffilediff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathan-lemos%2Ffilediff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1bba88c631d47d7991f8b4d4f6d7aed84dbc622a
[INFO] checking jonathan-lemos/filediff against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathan-lemos%2Ffilediff" "/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/jonathan-lemos/filediff on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jonathan-lemos/filediff
[INFO] finished tweaking git repo https://github.com/jonathan-lemos/filediff
[INFO] tweaked toml for git repo https://github.com/jonathan-lemos/filediff written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jonathan-lemos/filediff already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acd64abbde8110f53d5287c369e8c6afe813b887f071730b8a3f678acec0afa5
[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" "acd64abbde8110f53d5287c369e8c6afe813b887f071730b8a3f678acec0afa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acd64abbde8110f53d5287c369e8c6afe813b887f071730b8a3f678acec0afa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acd64abbde8110f53d5287c369e8c6afe813b887f071730b8a3f678acec0afa5", kill_on_drop: false }`
[INFO] [stdout] acd64abbde8110f53d5287c369e8c6afe813b887f071730b8a3f678acec0afa5
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--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] c9a840b55de421d0c3325ac4eb0a11ef3e52e7a362435fb82641e5b63ab1251a
[INFO] running `Command { std: "docker" "start" "-a" "c9a840b55de421d0c3325ac4eb0a11ef3e52e7a362435fb82641e5b63ab1251a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.25
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking filediff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/filesystem.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BorrowMut`
[INFO] [stdout]  --> src/filesystem.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::borrow::{BorrowMut, Borrow};
[INFO] [stdout]   |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/filesystem.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BorrowMut`
[INFO] [stdout]  --> src/filesystem.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::borrow::{BorrowMut, Borrow};
[INFO] [stdout]   |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0069]: `return;` in a function whose return type is not `()`
[INFO] [stdout]   --> src/filesystem.rs:66:58
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let list = unwrap_result_or![fs::read_dir(path), return];
[INFO] [stdout]    |                                                          ^^^^^^ return type is not `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0069`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `filediff`
[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] error[E0069]: `return;` in a function whose return type is not `()`
[INFO] [stdout]   --> src/filesystem.rs:66:58
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let list = unwrap_result_or![fs::read_dir(path), return];
[INFO] [stdout]    |                                                          ^^^^^^ return type is not `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0069`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c9a840b55de421d0c3325ac4eb0a11ef3e52e7a362435fb82641e5b63ab1251a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9a840b55de421d0c3325ac4eb0a11ef3e52e7a362435fb82641e5b63ab1251a", kill_on_drop: false }`
[INFO] [stdout] c9a840b55de421d0c3325ac4eb0a11ef3e52e7a362435fb82641e5b63ab1251a