[INFO] fetching crate mech-utilities 0.0.5...
[INFO] testing mech-utilities-0.0.5 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate mech-utilities 0.0.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mech-utilities 0.0.5 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mech-utilities 0.0.5
[INFO] finished tweaking crates.io crate mech-utilities 0.0.5
[INFO] tweaked toml for crates.io crate mech-utilities 0.0.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c5df1a013547dedb8cd1cc801b56f8bc0337282fdbf0a0f3e84cba18c8329c7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8c5df1a013547dedb8cd1cc801b56f8bc0337282fdbf0a0f3e84cba18c8329c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c5df1a013547dedb8cd1cc801b56f8bc0337282fdbf0a0f3e84cba18c8329c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c5df1a013547dedb8cd1cc801b56f8bc0337282fdbf0a0f3e84cba18c8329c7", kill_on_drop: false }`
[INFO] [stdout] 8c5df1a013547dedb8cd1cc801b56f8bc0337282fdbf0a0f3e84cba18c8329c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bc8608585dc5e23e94b470ea1d0107d751bb3fd789facf04f05a43a45ad2624
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7bc8608585dc5e23e94b470ea1d0107d751bb3fd789facf04f05a43a45ad2624", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling mech-core v0.0.5
[INFO] [stderr]    Compiling mech-utilities v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Core`, `Interner`, `TableId`
[INFO] [stdout]  --> src/lib.rs:8:53
[INFO] [stdout]   |
[INFO] [stdout] 8 | use mech_core::{Table, Value, Aliases, Transaction, Interner, TableId, Core, Constraint, Register};
[INFO] [stdout]   |                                                     ^^^^^^^^  ^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.09s
[INFO] running `Command { std: "docker" "inspect" "7bc8608585dc5e23e94b470ea1d0107d751bb3fd789facf04f05a43a45ad2624", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bc8608585dc5e23e94b470ea1d0107d751bb3fd789facf04f05a43a45ad2624", kill_on_drop: false }`
[INFO] [stdout] 7bc8608585dc5e23e94b470ea1d0107d751bb3fd789facf04f05a43a45ad2624
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc501e21bb574753dad2d18e19f133431352ffabbb42a623db8ba81ef6cc57c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bc501e21bb574753dad2d18e19f133431352ffabbb42a623db8ba81ef6cc57c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling mech-utilities v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Core`, `Interner`, `TableId`
[INFO] [stdout]  --> src/lib.rs:8:53
[INFO] [stdout]   |
[INFO] [stdout] 8 | use mech_core::{Table, Value, Aliases, Transaction, Interner, TableId, Core, Constraint, Register};
[INFO] [stdout]   |                                                     ^^^^^^^^  ^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Core`, `Interner`, `TableId`
[INFO] [stdout]  --> src/lib.rs:8:53
[INFO] [stdout]   |
[INFO] [stdout] 8 | use mech_core::{Table, Value, Aliases, Transaction, Interner, TableId, Core, Constraint, Register};
[INFO] [stdout]   |                                                     ^^^^^^^^  ^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "bc501e21bb574753dad2d18e19f133431352ffabbb42a623db8ba81ef6cc57c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc501e21bb574753dad2d18e19f133431352ffabbb42a623db8ba81ef6cc57c8", kill_on_drop: false }`
[INFO] [stdout] bc501e21bb574753dad2d18e19f133431352ffabbb42a623db8ba81ef6cc57c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bca3f6c9046156fa840167050f6e7385fec4ce99cbabc19a6f5d0aaa7209fcf8
[INFO] running `Command { std: "docker" "start" "-a" "bca3f6c9046156fa840167050f6e7385fec4ce99cbabc19a6f5d0aaa7209fcf8", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Core`, `Interner`, `TableId`
[INFO] [stderr]  --> src/lib.rs:8:53
[INFO] [stderr]   |
[INFO] [stderr] 8 | use mech_core::{Table, Value, Aliases, Transaction, Interner, TableId, Core, Constraint, Register};
[INFO] [stderr]   |                                                     ^^^^^^^^  ^^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Core`, `Interner`, `TableId`
[INFO] [stderr]  --> src/lib.rs:8:53
[INFO] [stderr]   |
[INFO] [stderr] 8 | use mech_core::{Table, Value, Aliases, Transaction, Interner, TableId, Core, Constraint, Register};
[INFO] [stderr]   |                                                     ^^^^^^^^  ^^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mech_utilities-70dc3cd59664bbdf)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests mech-utilities
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bca3f6c9046156fa840167050f6e7385fec4ce99cbabc19a6f5d0aaa7209fcf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bca3f6c9046156fa840167050f6e7385fec4ce99cbabc19a6f5d0aaa7209fcf8", kill_on_drop: false }`
[INFO] [stdout] bca3f6c9046156fa840167050f6e7385fec4ce99cbabc19a6f5d0aaa7209fcf8