[INFO] fetching crate mcs 0.1.1...
[INFO] checking mcs-0.1.1 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate mcs 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate mcs 0.1.1 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mcs 0.1.1
[INFO] finished tweaking crates.io crate mcs 0.1.1
[INFO] tweaked toml for crates.io crate mcs 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] [stderr]       Adding lazy_static v0.2.11 (latest: v1.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2c849e6651adc00ad44312bacb188c0f623bfb6a08242cda38c80959a110332
[INFO] running `Command { std: "docker" "start" "-a" "b2c849e6651adc00ad44312bacb188c0f623bfb6a08242cda38c80959a110332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2c849e6651adc00ad44312bacb188c0f623bfb6a08242cda38c80959a110332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c849e6651adc00ad44312bacb188c0f623bfb6a08242cda38c80959a110332", kill_on_drop: false }`
[INFO] [stdout] b2c849e6651adc00ad44312bacb188c0f623bfb6a08242cda38c80959a110332
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b86da5b714573ad8eddcc199326849676bd55286749813abca15a938f184115
[INFO] running `Command { std: "docker" "start" "-a" "1b86da5b714573ad8eddcc199326849676bd55286749813abca15a938f184115", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking mcs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))]
[INFO] [stdout]   |                                                ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]  --> src/pause.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |     unsafe { asm!("pause" :::: "volatile"); }
[INFO] [stdout]   |              ^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 1 + use core::arch::asm;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_param_attrs` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:58
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))]
[INFO] [stdout]   |                                                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `asm` has been stable since 1.59.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))]
[INFO] [stdout]   |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mutex.rs:134:23
[INFO] [stdout]     |
[INFO] [stdout] 134 |         if self.queue.compare_and_swap(ptr::null_mut(), slot, Ordering::AcqRel).is_null() {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/mutex.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mcs` (lib) due to 3 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))]
[INFO] [stdout]   |                                                ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]  --> src/pause.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |     unsafe { asm!("pause" :::: "volatile"); }
[INFO] [stdout]   |              ^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 1 + use std::arch::asm;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/mutex.rs:294:10
[INFO] [stdout]     |
[INFO] [stdout] 294 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/mutex.rs:281:9
[INFO] [stdout]     |
[INFO] [stdout] 281 | /         lazy_static! {
[INFO] [stdout] 282 | |             static ref LOCK: Mutex<u32> = Mutex::new(0);
[INFO] [stdout] 283 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_param_attrs` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:58
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))]
[INFO] [stdout]   |                                                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `asm` has been stable since 1.59.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))]
[INFO] [stdout]   |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mutex.rs:134:23
[INFO] [stdout]     |
[INFO] [stdout] 134 |         if self.queue.compare_and_swap(ptr::null_mut(), slot, Ordering::AcqRel).is_null() {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/mutex.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mcs` (lib test) due to 3 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1b86da5b714573ad8eddcc199326849676bd55286749813abca15a938f184115", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b86da5b714573ad8eddcc199326849676bd55286749813abca15a938f184115", kill_on_drop: false }`
[INFO] [stdout] 1b86da5b714573ad8eddcc199326849676bd55286749813abca15a938f184115
