[INFO] fetching crate slog 2.5.2... [INFO] extracting crate slog 2.5.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/slog/2.5.2 [INFO] extracting crate slog 2.5.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/slog/2.5.2 [INFO] validating manifest of slog-2.5.2 on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of slog-2.5.2 on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing slog-2.5.2 [INFO] removed 1 missing examples [INFO] finished frobbing slog-2.5.2 [INFO] frobbed toml for slog-2.5.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/slog/2.5.2/Cargo.toml [INFO] started frobbing slog-2.5.2 [INFO] removed 1 missing examples [INFO] finished frobbing slog-2.5.2 [INFO] frobbed toml for slog-2.5.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/slog/2.5.2/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing slog-2.5.2 against 1.36.0 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/slog/2.5.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"` [INFO] [stdout] 4d8808f6e31f2253e32664cc11f0aacc6b9aeffd67a4853cf1151c7de4db10b0 [INFO] running `"docker" "start" "-a" "4d8808f6e31f2253e32664cc11f0aacc6b9aeffd67a4853cf1151c7de4db10b0"` [INFO] [stderr] Compiling slog v2.5.2 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.48s [INFO] running `"docker" "inspect" "4d8808f6e31f2253e32664cc11f0aacc6b9aeffd67a4853cf1151c7de4db10b0"` [INFO] running `"docker" "rm" "-f" "4d8808f6e31f2253e32664cc11f0aacc6b9aeffd67a4853cf1151c7de4db10b0"` [INFO] [stdout] 4d8808f6e31f2253e32664cc11f0aacc6b9aeffd67a4853cf1151c7de4db10b0 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/slog/2.5.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 0ebe3d546282f88aaf40d3f52d3351ecaec025616a7e3edd6328ba77479793cc [INFO] running `"docker" "start" "-a" "0ebe3d546282f88aaf40d3f52d3351ecaec025616a7e3edd6328ba77479793cc"` [INFO] [stderr] Compiling slog v2.5.2 (/opt/crater/workdir) [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> examples/struct-log-self.rs:3:1 [INFO] [stderr] | [INFO] [stderr] 3 | #[macro_use] [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] error[E0277]: `std::rc::Rc>` cannot be sent between threads safely [INFO] [stderr] --> examples/singlethread.rs:24:26 [INFO] [stderr] | [INFO] [stderr] 24 | let sublog = log.new(o!("obj.val" => slog::FnValue(move |_| { [INFO] [stderr] | __________________________^ [INFO] [stderr] 25 | | format!("{}", obj2.val.borrow()) [INFO] [stderr] 26 | | }))); [INFO] [stderr] | |_______^ `std::rc::Rc>` cannot be sent between threads safely [INFO] [stderr] | [INFO] [stderr] = help: within `(slog::SingleKV>, ())`, the trait `std::marker::Send` is not implemented for `std::rc::Rc>` [INFO] [stderr] = note: required because it appears within the type `NoThreadSafeObject` [INFO] [stderr] = note: required because it appears within the type `[closure@examples/singlethread.rs:24:56: 26:6 obj2:NoThreadSafeObject]` [INFO] [stderr] = note: required because it appears within the type `slog::FnValue` [INFO] [stderr] = note: required because it appears within the type `slog::SingleKV>` [INFO] [stderr] = note: required because it appears within the type `(slog::SingleKV>, ())` [INFO] [stderr] = note: required because of the requirements on the impl of `slog::SendSyncRefUnwindSafeKV` for `(slog::SingleKV>, ())` [INFO] [stderr] = note: required by `slog::OwnedKV` [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error[E0277]: `std::rc::Rc>` cannot be shared between threads safely [INFO] [stderr] --> examples/singlethread.rs:24:26 [INFO] [stderr] | [INFO] [stderr] 24 | let sublog = log.new(o!("obj.val" => slog::FnValue(move |_| { [INFO] [stderr] | __________________________^ [INFO] [stderr] 25 | | format!("{}", obj2.val.borrow()) [INFO] [stderr] 26 | | }))); [INFO] [stderr] | |_______^ `std::rc::Rc>` cannot be shared between threads safely [INFO] [stderr] | [INFO] [stderr] = help: within `(slog::SingleKV>, ())`, the trait `std::marker::Sync` is not implemented for `std::rc::Rc>` [INFO] [stderr] = note: required because it appears within the type `NoThreadSafeObject` [INFO] [stderr] = note: required because it appears within the type `[closure@examples/singlethread.rs:24:56: 26:6 obj2:NoThreadSafeObject]` [INFO] [stderr] = note: required because it appears within the type `slog::FnValue` [INFO] [stderr] = note: required because it appears within the type `slog::SingleKV>` [INFO] [stderr] = note: required because it appears within the type `(slog::SingleKV>, ())` [INFO] [stderr] = note: required because of the requirements on the impl of `slog::SendSyncRefUnwindSafeKV` for `(slog::SingleKV>, ())` [INFO] [stderr] = note: required by `slog::OwnedKV` [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error[E0277]: the type `std::cell::UnsafeCell` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary [INFO] [stderr] --> examples/singlethread.rs:24:26 [INFO] [stderr] | [INFO] [stderr] 24 | let sublog = log.new(o!("obj.val" => slog::FnValue(move |_| { [INFO] [stderr] | __________________________^ [INFO] [stderr] 25 | | format!("{}", obj2.val.borrow()) [INFO] [stderr] 26 | | }))); [INFO] [stderr] | |_______^ `std::cell::UnsafeCell` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary [INFO] [stderr] | [INFO] [stderr] = help: within `(slog::SingleKV>, ())`, the trait `std::panic::RefUnwindSafe` is not implemented for `std::cell::UnsafeCell` [INFO] [stderr] = note: required because it appears within the type `std::cell::RefCell` [INFO] [stderr] = note: required because it appears within the type `std::marker::PhantomData>` [INFO] [stderr] = note: required because it appears within the type `std::rc::Rc>` [INFO] [stderr] = note: required because it appears within the type `NoThreadSafeObject` [INFO] [stderr] = note: required because it appears within the type `[closure@examples/singlethread.rs:24:56: 26:6 obj2:NoThreadSafeObject]` [INFO] [stderr] = note: required because it appears within the type `slog::FnValue` [INFO] [stderr] = note: required because it appears within the type `slog::SingleKV>` [INFO] [stderr] = note: required because it appears within the type `(slog::SingleKV>, ())` [INFO] [stderr] = note: required because of the requirements on the impl of `slog::SendSyncRefUnwindSafeKV` for `(slog::SingleKV>, ())` [INFO] [stderr] = note: required by `slog::OwnedKV` [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error[E0277]: the type `std::cell::UnsafeCell` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary [INFO] [stderr] --> examples/singlethread.rs:24:26 [INFO] [stderr] | [INFO] [stderr] 24 | let sublog = log.new(o!("obj.val" => slog::FnValue(move |_| { [INFO] [stderr] | __________________________^ [INFO] [stderr] 25 | | format!("{}", obj2.val.borrow()) [INFO] [stderr] 26 | | }))); [INFO] [stderr] | |_______^ `std::cell::UnsafeCell` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary [INFO] [stderr] | [INFO] [stderr] = help: within `(slog::SingleKV>, ())`, the trait `std::panic::RefUnwindSafe` is not implemented for `std::cell::UnsafeCell` [INFO] [stderr] = note: required because it appears within the type `std::cell::Cell` [INFO] [stderr] = note: required because it appears within the type `std::cell::RefCell` [INFO] [stderr] = note: required because it appears within the type `std::marker::PhantomData>` [INFO] [stderr] = note: required because it appears within the type `std::rc::Rc>` [INFO] [stderr] = note: required because it appears within the type `NoThreadSafeObject` [INFO] [stderr] = note: required because it appears within the type `[closure@examples/singlethread.rs:24:56: 26:6 obj2:NoThreadSafeObject]` [INFO] [stderr] = note: required because it appears within the type `slog::FnValue` [INFO] [stderr] = note: required because it appears within the type `slog::SingleKV>` [INFO] [stderr] = note: required because it appears within the type `(slog::SingleKV>, ())` [INFO] [stderr] = note: required because of the requirements on the impl of `slog::SendSyncRefUnwindSafeKV` for `(slog::SingleKV>, ())` [INFO] [stderr] = note: required by `slog::OwnedKV` [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error: aborting due to 4 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0277`. [INFO] [stderr] error: Could not compile `slog`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: unused arithmetic operation that must be used [INFO] [stderr] --> src/tests.rs:183:13 [INFO] [stderr] | [INFO] [stderr] 183 | { 3 + 3; 2}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused arithmetic operation that must be used [INFO] [stderr] --> src/tests.rs:185:22 [INFO] [stderr] | [INFO] [stderr] 185 | "foo" => { 3 + 3; 2}, [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "0ebe3d546282f88aaf40d3f52d3351ecaec025616a7e3edd6328ba77479793cc"` [INFO] running `"docker" "rm" "-f" "0ebe3d546282f88aaf40d3f52d3351ecaec025616a7e3edd6328ba77479793cc"` [INFO] [stdout] 0ebe3d546282f88aaf40d3f52d3351ecaec025616a7e3edd6328ba77479793cc