[INFO] fetching crate mech-utilities 0.0.5...
[INFO] testing mech-utilities-0.0.5 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate mech-utilities 0.0.5 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate mech-utilities 0.0.5 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-81/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 068cd5b5b3517184942878b68cb85d85b9310487aee08e31fff30effd84478f9
[INFO] running `Command { std: "docker" "start" "-a" "068cd5b5b3517184942878b68cb85d85b9310487aee08e31fff30effd84478f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "068cd5b5b3517184942878b68cb85d85b9310487aee08e31fff30effd84478f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "068cd5b5b3517184942878b68cb85d85b9310487aee08e31fff30effd84478f9", kill_on_drop: false }`
[INFO] [stdout] 068cd5b5b3517184942878b68cb85d85b9310487aee08e31fff30effd84478f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e09d6e9257a154065f53feee11aaea02c383393e0868443891311795d47b0f9e
[INFO] running `Command { std: "docker" "start" "-a" "e09d6e9257a154065f53feee11aaea02c383393e0868443891311795d47b0f9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling syn v1.0.81
[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 15.37s
[INFO] running `Command { std: "docker" "inspect" "e09d6e9257a154065f53feee11aaea02c383393e0868443891311795d47b0f9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e09d6e9257a154065f53feee11aaea02c383393e0868443891311795d47b0f9e", kill_on_drop: false }`
[INFO] [stdout] e09d6e9257a154065f53feee11aaea02c383393e0868443891311795d47b0f9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b987d5206d7106af8e472bce0b391c09addfe492081c2fe30c72a3d698fc43db
[INFO] running `Command { std: "docker" "start" "-a" "b987d5206d7106af8e472bce0b391c09addfe492081c2fe30c72a3d698fc43db", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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]    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 test [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "b987d5206d7106af8e472bce0b391c09addfe492081c2fe30c72a3d698fc43db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b987d5206d7106af8e472bce0b391c09addfe492081c2fe30c72a3d698fc43db", kill_on_drop: false }`
[INFO] [stdout] b987d5206d7106af8e472bce0b391c09addfe492081c2fe30c72a3d698fc43db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f31c726fdbfa80805feb70ddf51702952405a29e500743dbc2f2fb952e2031b3
[INFO] running `Command { std: "docker" "start" "-a" "f31c726fdbfa80805feb70ddf51702952405a29e500743dbc2f2fb952e2031b3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: `mech-utilities` (lib) generated 1 warning
[INFO] [stderr] warning: `mech-utilities` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mech_utilities-a7d2b7a4554c7ab4)
[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] [stderr]    Doc-tests mech-utilities
[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" "f31c726fdbfa80805feb70ddf51702952405a29e500743dbc2f2fb952e2031b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f31c726fdbfa80805feb70ddf51702952405a29e500743dbc2f2fb952e2031b3", kill_on_drop: false }`
[INFO] [stdout] f31c726fdbfa80805feb70ddf51702952405a29e500743dbc2f2fb952e2031b3