[INFO] crate smt2 0.1.0 is already in cache
[INFO] checking smt2-0.1.0 against master#6d69caba110c0c2fb90180df1cbc8be5033b91d4 for pr-69530
[INFO] extracting crate smt2 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate smt2 0.1.0 on toolchain 6d69caba110c0c2fb90180df1cbc8be5033b91d4
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate smt2 0.1.0
[INFO] finished tweaking crates.io crate smt2 0.1.0
[INFO] tweaked toml for crates.io crate smt2 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "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" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "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] 890d5c880a65cc78a7c517245f28a738ce4a4afcfabc759847246fc87cc9ed87
[INFO] running `"docker" "start" "-a" "890d5c880a65cc78a7c517245f28a738ce4a4afcfabc759847246fc87cc9ed87"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking utf8-decode v1.0.1
[INFO] [stderr]     Checking source-span v1.4.0
[INFO] [stderr]     Checking smt2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `downgrade_pattern`
[INFO] [stderr]   --> src/client/interface.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<L, C, S, F>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `downgrade_sort_declaration`
[INFO] [stderr]    --> src/client/interface.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>, Error<L, C, S, F>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upgrade_pattern`
[INFO] [stderr]    --> src/client/interface.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L, C, S, F>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upgrade_abstract_sort`
[INFO] [stderr]    --> src/client/interface.rs:247:5
[INFO] [stderr]     |
[INFO] [stderr] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S, F>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `downgrade_pattern`
[INFO] [stderr]   --> src/client/interface.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<L, C, S, F>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `downgrade_sort_declaration`
[INFO] [stderr]    --> src/client/interface.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>, Error<L, C, S, F>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upgrade_pattern`
[INFO] [stderr]    --> src/client/interface.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L, C, S, F>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upgrade_abstract_sort`
[INFO] [stderr]    --> src/client/interface.rs:247:5
[INFO] [stderr]     |
[INFO] [stderr] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S, F>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.00s
[INFO] running `"docker" "inspect" "890d5c880a65cc78a7c517245f28a738ce4a4afcfabc759847246fc87cc9ed87"`
[INFO] running `"docker" "rm" "-f" "890d5c880a65cc78a7c517245f28a738ce4a4afcfabc759847246fc87cc9ed87"`
[INFO] [stdout] 890d5c880a65cc78a7c517245f28a738ce4a4afcfabc759847246fc87cc9ed87