[INFO] updating cached repository https://github.com/HristoKolev/sync-dir
[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] bdbacd016edb41d6cf6755d1c294d6d9f5f3c059
[INFO] checking HristoKolev/sync-dir against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHristoKolev%2Fsync-dir" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HristoKolev/sync-dir on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/HristoKolev/sync-dir
[INFO] finished tweaking git repo https://github.com/HristoKolev/sync-dir
[INFO] tweaked toml for git repo https://github.com/HristoKolev/sync-dir written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/HristoKolev/sync-dir already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 749116b9715d86d1465a8ed1a69913c390f30410a56148d15d10896377f87248
[INFO] running `"docker" "start" "-a" "749116b9715d86d1465a8ed1a69913c390f30410a56148d15d10896377f87248"`
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling openssl v0.10.23
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling openssl-src v111.3.0+1.1.1c
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.1
[INFO] [stderr]     Checking miniz_oxide v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking uname v0.1.1
[INFO] [stderr]     Checking filetime v0.2.5
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]    Compiling im v12.3.4
[INFO] [stderr]    Compiling sentry v0.15.5
[INFO] [stderr]     Checking bstr v0.1.4
[INFO] [stderr]     Checking sized-chunks v0.1.3
[INFO] [stderr]     Checking regex v1.1.7
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking h2 v0.1.23
[INFO] [stderr]     Checking tokio v0.1.21
[INFO] [stderr]    Compiling openssl-sys v0.9.47
[INFO] [stderr]     Checking notify v4.0.12
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking globset v0.4.3
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking flate2 v1.0.7
[INFO] [stderr]     Checking publicsuffix v1.5.2
[INFO] [stderr]     Checking ignore v0.4.7
[INFO] [stderr]     Checking hyper v0.12.30
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking debugid v0.4.0
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking sentry-types v0.11.0
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.18
[INFO] [stderr]     Checking sync-dir v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/global/sentry_backtrace.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         {rv}
[INFO] [stderr]    |         ^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/global/sentry_backtrace.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         {rv}
[INFO] [stderr]    |         ^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: `match` arms have incompatible types
[INFO] [stderr]    --> src/global/extensions.rs:141:24
[INFO] [stderr]     |
[INFO] [stderr] 137 |   impl<T> OptionFlatten<T> for Option<Option<Option<Option<T>>>> {
[INFO] [stderr]     |        - this type parameter
[INFO] [stderr] 138 |       fn flatten(self) -> Option<T> {
[INFO] [stderr] 139 | /         match self {
[INFO] [stderr] 140 | |             None => None,
[INFO] [stderr]     | |                     ---- this is found to be of type `std::option::Option<T>`
[INFO] [stderr] 141 | |             Some(v) => v.flatten(),
[INFO] [stderr]     | |                        ^^^^^^^^^^^ expected type parameter `T`, found enum `std::option::Option`
[INFO] [stderr] 142 | |         }
[INFO] [stderr]     | |_________- `match` arms have incompatible types
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected enum `std::option::Option<T>`
[INFO] [stderr]                found enum `std::option::Option<std::option::Option<T>>`
[INFO] [stderr]     = help: type parameters must be constrained to match other types
[INFO] [stderr]     = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: `match` arms have incompatible types
[INFO] [stderr]    --> src/global/extensions.rs:141:24
[INFO] [stderr]     |
[INFO] [stderr] 137 |   impl<T> OptionFlatten<T> for Option<Option<Option<Option<T>>>> {
[INFO] [stderr]     |        - this type parameter
[INFO] [stderr] 138 |       fn flatten(self) -> Option<T> {
[INFO] [stderr] 139 | /         match self {
[INFO] [stderr] 140 | |             None => None,
[INFO] [stderr]     | |                     ---- this is found to be of type `std::option::Option<T>`
[INFO] [stderr] 141 | |             Some(v) => v.flatten(),
[INFO] [stderr]     | |                        ^^^^^^^^^^^ expected type parameter `T`, found enum `std::option::Option`
[INFO] [stderr] 142 | |         }
[INFO] [stderr]     | |_________- `match` arms have incompatible types
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected enum `std::option::Option<T>`
[INFO] [stderr]                found enum `std::option::Option<std::option::Option<T>>`
[INFO] [stderr]     = help: type parameters must be constrained to match other types
[INFO] [stderr]     = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: `match` arms have incompatible types
[INFO] [stderr]    --> src/global/extensions.rs:150:24
[INFO] [stderr]     |
[INFO] [stderr] 146 |   impl<T> OptionFlatten<T> for Option<Option<Option<Option<Option<T>>>>> {
[INFO] [stderr]     |        - this type parameter
[INFO] [stderr] 147 |       fn flatten(self) -> Option<T> {
[INFO] [stderr] 148 | /         match self {
[INFO] [stderr] 149 | |             None => None,
[INFO] [stderr]     | |                     ---- this is found to be of type `std::option::Option<T>`
[INFO] [stderr] 150 | |             Some(v) => v.flatten(),
[INFO] [stderr]     | |                        ^^^^^^^^^^^ expected type parameter `T`, found enum `std::option::Option`
[INFO] [stderr] 151 | |         }
[INFO] [stderr]     | |_________- `match` arms have incompatible types
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected enum `std::option::Option<T>`
[INFO] [stderr]                found enum `std::option::Option<std::option::Option<std::option::Option<T>>>`
[INFO] [stderr]     = help: type parameters must be constrained to match other types
[INFO] [stderr]     = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: `match` arms have incompatible types
[INFO] [stderr]    --> src/global/extensions.rs:150:24
[INFO] [stderr]     |
[INFO] [stderr] 146 |   impl<T> OptionFlatten<T> for Option<Option<Option<Option<Option<T>>>>> {
[INFO] [stderr]     |        - this type parameter
[INFO] [stderr] 147 |       fn flatten(self) -> Option<T> {
[INFO] [stderr] 148 | /         match self {
[INFO] [stderr] 149 | |             None => None,
[INFO] [stderr]     | |                     ---- this is found to be of type `std::option::Option<T>`
[INFO] [stderr] 150 | |             Some(v) => v.flatten(),
[INFO] [stderr]     | |                        ^^^^^^^^^^^ expected type parameter `T`, found enum `std::option::Option`
[INFO] [stderr] 151 | |         }
[INFO] [stderr]     | |_________- `match` arms have incompatible types
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected enum `std::option::Option<T>`
[INFO] [stderr]                found enum `std::option::Option<std::option::Option<std::option::Option<T>>>`
[INFO] [stderr]     = help: type parameters must be constrained to match other types
[INFO] [stderr]     = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `sync-dir`.
[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] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `sync-dir`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "749116b9715d86d1465a8ed1a69913c390f30410a56148d15d10896377f87248"`
[INFO] running `"docker" "rm" "-f" "749116b9715d86d1465a8ed1a69913c390f30410a56148d15d10896377f87248"`
[INFO] [stdout] 749116b9715d86d1465a8ed1a69913c390f30410a56148d15d10896377f87248
