[INFO] fetching crate mmtk 0.6.0...
[INFO] checking mmtk-0.6.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate mmtk 0.6.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate mmtk 0.6.0 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/rust-toolchain
[INFO] started tweaking crates.io crate mmtk 0.6.0
[INFO] finished tweaking crates.io crate mmtk 0.6.0
[INFO] tweaked toml for crates.io crate mmtk 0.6.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded perf-event-open-sys v1.0.1
[INFO] [stderr]   Downloaded crossbeam-deque v0.6.3
[INFO] [stderr]   Downloaded atomic v0.4.6
[INFO] [stderr]   Downloaded atomic-traits v0.2.0
[INFO] [stderr]   Downloaded enum-map v0.6.4
[INFO] [stderr]   Downloaded bindgen v0.58.1
[INFO] [stderr]   Downloaded array-macro v1.0.5
[INFO] [stderr]   Downloaded pfm v0.0.8
[INFO] [stderr]   Downloaded enum-map-derive v0.4.6
[INFO] [stderr]   Downloaded jemalloc-sys v0.3.2
[INFO] [stderr]   Downloaded uname v0.1.1
[INFO] [stderr]   Downloaded hoard-sys v0.1.1
[INFO] [stderr]   Downloaded pfm-sys v0.0.13
[INFO] [stderr]   Downloaded mimalloc-sys v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63478d5bb3d9641b563efe3bc9f5a14076518c32071bfcd90cf96b7d4fcf3ae1
[INFO] running `Command { std: "docker" "start" "-a" "63478d5bb3d9641b563efe3bc9f5a14076518c32071bfcd90cf96b7d4fcf3ae1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63478d5bb3d9641b563efe3bc9f5a14076518c32071bfcd90cf96b7d4fcf3ae1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63478d5bb3d9641b563efe3bc9f5a14076518c32071bfcd90cf96b7d4fcf3ae1", kill_on_drop: false }`
[INFO] [stdout] 63478d5bb3d9641b563efe3bc9f5a14076518c32071bfcd90cf96b7d4fcf3ae1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3723c02e4567a93c4a0a5861a5f607537d2407557eef6fbf9e2bfb0051bf377
[INFO] running `Command { std: "docker" "start" "-a" "f3723c02e4567a93c4a0a5861a5f607537d2407557eef6fbf9e2bfb0051bf377", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking enum_derive v0.1.7
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling atomic-traits v0.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking enum-map v0.6.4
[INFO] [stderr]     Checking mmtk v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(const_generics)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: removed in favor of `#![feature(adt_const_params)]` and `#![feature(generic_const_exprs)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(const_generics)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: removed in favor of `#![feature(adt_const_params)]` and `#![feature(generic_const_exprs)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]    --> src/policy/immix/block.rs:307:1
[INFO] [stdout]     |
[INFO] [stdout] 307 | / unsafe impl Step for Block {
[INFO] [stdout] 308 | |     /// Get the number of blocks between the given two blocks.
[INFO] [stdout] 309 | |     #[inline(always)]
[INFO] [stdout] 310 | |     #[allow(clippy::assertions_on_constants)]
[INFO] [stdout] ...   |
[INFO] [stdout] 343 | |     }
[INFO] [stdout] 344 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]    --> src/policy/immix/chunk.rs:83:1
[INFO] [stdout]     |
[INFO] [stdout] 83  | / unsafe impl Step for Chunk {
[INFO] [stdout] 84  | |     /// Get the number of chunks between the given two chunks.
[INFO] [stdout] 85  | |     #[inline(always)]
[INFO] [stdout] 86  | |     fn steps_between(start: &Self, end: &Self) -> Option<usize> {
[INFO] [stdout] ...   |
[INFO] [stdout] 117 | |     }
[INFO] [stdout] 118 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]    --> src/policy/immix/line.rs:116:1
[INFO] [stdout]     |
[INFO] [stdout] 116 | / unsafe impl Step for Line {
[INFO] [stdout] 117 | |     /// Get the number of lines between the given two lines.
[INFO] [stdout] 118 | |     #[inline(always)]
[INFO] [stdout] 119 | |     fn steps_between(start: &Self, end: &Self) -> Option<usize> {
[INFO] [stdout] ...   |
[INFO] [stdout] 155 | |     }
[INFO] [stdout] 156 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0199, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0199`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mmtk` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]    --> src/policy/immix/block.rs:307:1
[INFO] [stdout]     |
[INFO] [stdout] 307 | / unsafe impl Step for Block {
[INFO] [stdout] 308 | |     /// Get the number of blocks between the given two blocks.
[INFO] [stdout] 309 | |     #[inline(always)]
[INFO] [stdout] 310 | |     #[allow(clippy::assertions_on_constants)]
[INFO] [stdout] ...   |
[INFO] [stdout] 343 | |     }
[INFO] [stdout] 344 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]    --> src/policy/immix/chunk.rs:83:1
[INFO] [stdout]     |
[INFO] [stdout] 83  | / unsafe impl Step for Chunk {
[INFO] [stdout] 84  | |     /// Get the number of chunks between the given two chunks.
[INFO] [stdout] 85  | |     #[inline(always)]
[INFO] [stdout] 86  | |     fn steps_between(start: &Self, end: &Self) -> Option<usize> {
[INFO] [stdout] ...   |
[INFO] [stdout] 117 | |     }
[INFO] [stdout] 118 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]    --> src/policy/immix/line.rs:116:1
[INFO] [stdout]     |
[INFO] [stdout] 116 | / unsafe impl Step for Line {
[INFO] [stdout] 117 | |     /// Get the number of lines between the given two lines.
[INFO] [stdout] 118 | |     #[inline(always)]
[INFO] [stdout] 119 | |     fn steps_between(start: &Self, end: &Self) -> Option<usize> {
[INFO] [stdout] ...   |
[INFO] [stdout] 155 | |     }
[INFO] [stdout] 156 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0199, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0199`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f3723c02e4567a93c4a0a5861a5f607537d2407557eef6fbf9e2bfb0051bf377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3723c02e4567a93c4a0a5861a5f607537d2407557eef6fbf9e2bfb0051bf377", kill_on_drop: false }`
[INFO] [stdout] f3723c02e4567a93c4a0a5861a5f607537d2407557eef6fbf9e2bfb0051bf377