[INFO] fetching crate chalk-engine 0.9.0...
[INFO] checking chalk-engine-0.9.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate chalk-engine 0.9.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate chalk-engine 0.9.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate chalk-engine 0.9.0
[INFO] finished tweaking crates.io crate chalk-engine 0.9.0
[INFO] tweaked toml for crates.io crate chalk-engine 0.9.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 6e62b65daab73e20a123f58e220c013d874847e6e205c4aebd764e524ed670b3
[INFO] running `"docker" "start" "-a" "6e62b65daab73e20a123f58e220c013d874847e6e205c4aebd764e524ed670b3"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling psm v0.1.5
[INFO] [stderr]    Compiling stacker v0.1.6
[INFO] [stderr]     Checking chalk-macros v0.1.0
[INFO] [stderr]     Checking chalk-engine v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/stack.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / /// The StackIndex identifies the position of a table's goal in the
[INFO] [stderr] 12 | | /// stack of goals that are actively being processed. Note that once a
[INFO] [stderr] 13 | | /// table is completely evaluated, it may be popped from the stack,
[INFO] [stderr] 14 | | /// and hence no longer have a stack index.
[INFO] [stderr]    | |___________________________________________^
[INFO] [stderr] 15 | / index_struct! {
[INFO] [stderr] 16 | |     pub(crate) struct StackIndex {
[INFO] [stderr] 17 | |         value: usize,
[INFO] [stderr] 18 | |     }
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/lib.rs:87:1
[INFO] [stderr]    |
[INFO] [stderr] 87 | / /// The StackIndex identifies the position of a table's goal in the
[INFO] [stderr] 88 | | /// stack of goals that are actively being processed. Note that once a
[INFO] [stderr] 89 | | /// table is completely evaluated, it may be popped from the stack,
[INFO] [stderr] 90 | | /// and hence no longer have a stack index.
[INFO] [stderr]    | |___________________________________________^
[INFO] [stderr] 91 | / index_struct! {
[INFO] [stderr] 92 | |     struct StackIndex {
[INFO] [stderr] 93 | |         value: usize,
[INFO] [stderr] 94 | |     }
[INFO] [stderr] 95 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/stack.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / /// The StackIndex identifies the position of a table's goal in the
[INFO] [stderr] 12 | | /// stack of goals that are actively being processed. Note that once a
[INFO] [stderr] 13 | | /// table is completely evaluated, it may be popped from the stack,
[INFO] [stderr] 14 | | /// and hence no longer have a stack index.
[INFO] [stderr]    | |___________________________________________^
[INFO] [stderr] 15 | / index_struct! {
[INFO] [stderr] 16 | |     pub(crate) struct StackIndex {
[INFO] [stderr] 17 | |         value: usize,
[INFO] [stderr] 18 | |     }
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/lib.rs:87:1
[INFO] [stderr]    |
[INFO] [stderr] 87 | / /// The StackIndex identifies the position of a table's goal in the
[INFO] [stderr] 88 | | /// stack of goals that are actively being processed. Note that once a
[INFO] [stderr] 89 | | /// table is completely evaluated, it may be popped from the stack,
[INFO] [stderr] 90 | | /// and hence no longer have a stack index.
[INFO] [stderr]    | |___________________________________________^
[INFO] [stderr] 91 | / index_struct! {
[INFO] [stderr] 92 | |     struct StackIndex {
[INFO] [stderr] 93 | |         value: usize,
[INFO] [stderr] 94 | |     }
[INFO] [stderr] 95 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/logic.rs:565:17
[INFO] [stderr]     |
[INFO] [stderr] 565 |             let mut delayed_literals: FxHashSet<_> = delayed_literals.into_iter()
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/logic.rs:565:17
[INFO] [stderr]     |
[INFO] [stderr] 565 |             let mut delayed_literals: FxHashSet<_> = delayed_literals.into_iter()
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `non_modrs_mods` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:54:12
[INFO] [stderr]    |
[INFO] [stderr] 54 | #![feature(non_modrs_mods)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `non_modrs_mods` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:54:12
[INFO] [stderr]    |
[INFO] [stderr] 54 | #![feature(non_modrs_mods)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.50s
[INFO] running `"docker" "inspect" "6e62b65daab73e20a123f58e220c013d874847e6e205c4aebd764e524ed670b3"`
[INFO] running `"docker" "rm" "-f" "6e62b65daab73e20a123f58e220c013d874847e6e205c4aebd764e524ed670b3"`
[INFO] [stdout] 6e62b65daab73e20a123f58e220c013d874847e6e205c4aebd764e524ed670b3