[INFO] updating cached repository https://github.com/Dylan-DPC/cargo-stabilize
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4bcdddcb406528ed628367042723908049d01260
[INFO] checking Dylan-DPC/cargo-stabilize against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fcargo-stabilize" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dylan-DPC/cargo-stabilize on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Dylan-DPC/cargo-stabilize
[INFO] finished tweaking git repo https://github.com/Dylan-DPC/cargo-stabilize
[INFO] tweaked toml for git repo https://github.com/Dylan-DPC/cargo-stabilize written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/Dylan-DPC/cargo-stabilize already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b49e37e8dbc6432e87b96f7ef1779d99c97bb9e50c05ec9ccd31cb6253f67468
[INFO] running `"docker" "start" "-a" "b49e37e8dbc6432e87b96f7ef1779d99c97bb9e50c05ec9ccd31cb6253f67468"`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking memchr v2.1.2
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking cargo-stamp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/stabilize.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |       fn change_conditional_compilation(&self) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                                                   -------------------------- expected `std::result::Result<(), std::boxed::Box<(dyn std::error::Error + 'static)>>` because of return type
[INFO] [stderr] 60 | /         for entry in WalkDir::new(self.path.join("src")) {
[INFO] [stderr] 61 | |
[INFO] [stderr] 62 | |
[INFO] [stderr] 63 | |
[INFO] [stderr] 64 | |         }
[INFO] [stderr]    | |_________^ expected enum `std::result::Result`, found ()
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<(), std::boxed::Box<(dyn std::error::Error + 'static)>>`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `cargo-stamp`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/stabilize.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |       fn change_conditional_compilation(&self) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                                                   -------------------------- expected `std::result::Result<(), std::boxed::Box<(dyn std::error::Error + 'static)>>` because of return type
[INFO] [stderr] 60 | /         for entry in WalkDir::new(self.path.join("src")) {
[INFO] [stderr] 61 | |
[INFO] [stderr] 62 | |
[INFO] [stderr] 63 | |
[INFO] [stderr] 64 | |         }
[INFO] [stderr]    | |_________^ expected enum `std::result::Result`, found ()
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<(), std::boxed::Box<(dyn std::error::Error + 'static)>>`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `cargo-stamp`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b49e37e8dbc6432e87b96f7ef1779d99c97bb9e50c05ec9ccd31cb6253f67468"`
[INFO] running `"docker" "rm" "-f" "b49e37e8dbc6432e87b96f7ef1779d99c97bb9e50c05ec9ccd31cb6253f67468"`
[INFO] [stdout] b49e37e8dbc6432e87b96f7ef1779d99c97bb9e50c05ec9ccd31cb6253f67468