[INFO] cloning repository https://github.com/enokson/laboratory
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/enokson/laboratory" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenokson%2Flaboratory", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenokson%2Flaboratory'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33f7307970cda286fa3fb7917b423d774ae345e7
[INFO] testing enokson/laboratory against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenokson%2Flaboratory" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/enokson/laboratory 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 git repo https://github.com/enokson/laboratory
[INFO] finished tweaking git repo https://github.com/enokson/laboratory
[INFO] tweaked toml for git repo https://github.com/enokson/laboratory written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate git repo https://github.com/enokson/laboratory already has a lockfile, it will not be regenerated
[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-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] b663b8c090e926cae78c7f23e576aab2d5a1fef3582c88c512fdf10596a9076c
[INFO] running `Command { std: "docker" "start" "-a" "b663b8c090e926cae78c7f23e576aab2d5a1fef3582c88c512fdf10596a9076c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b663b8c090e926cae78c7f23e576aab2d5a1fef3582c88c512fdf10596a9076c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b663b8c090e926cae78c7f23e576aab2d5a1fef3582c88c512fdf10596a9076c", kill_on_drop: false }`
[INFO] [stdout] b663b8c090e926cae78c7f23e576aab2d5a1fef3582c88c512fdf10596a9076c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] 51345ab5a02112ff7fdaea6fa9e4da4f3ba078c7bd796666fb17dd760c16fb9d
[INFO] running `Command { std: "docker" "start" "-a" "51345ab5a02112ff7fdaea6fa9e4da4f3ba078c7bd796666fb17dd760c16fb9d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling termios v0.3.2
[INFO] [stderr]    Compiling terminal_size v0.1.13
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling console v0.12.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling laboratory v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 26s
[INFO] running `Command { std: "docker" "inspect" "51345ab5a02112ff7fdaea6fa9e4da4f3ba078c7bd796666fb17dd760c16fb9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51345ab5a02112ff7fdaea6fa9e4da4f3ba078c7bd796666fb17dd760c16fb9d", kill_on_drop: false }`
[INFO] [stdout] 51345ab5a02112ff7fdaea6fa9e4da4f3ba078c7bd796666fb17dd760c16fb9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] 3c3ddd7042debd6d63e7de2ca4f9c0f02f8286f1b4030cac1bea04d502921cd2
[INFO] running `Command { std: "docker" "start" "-a" "3c3ddd7042debd6d63e7de2ca4f9c0f02f8286f1b4030cac1bea04d502921cd2", 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]    Compiling laboratory v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> tests/tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> tests/tests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `should_panic`
[INFO] [stdout]  --> tests/tests.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use laboratory::{ describe, expect, should_panic, LabResult };
[INFO] [stdout]   |                                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> tests/tests.rs:15:27
[INFO] [stdout]    |
[INFO] [stdout] 15 |     ctx.before_each(move |state| {
[INFO] [stdout]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> tests/tests.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |     ctx.after_all(move |state| {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `spec`
[INFO] [stdout]   --> tests/tests.rs:24:25
[INFO] [stdout]    |
[INFO] [stdout] 24 |       suite.it("test", |spec| {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_spec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.07s
[INFO] running `Command { std: "docker" "inspect" "3c3ddd7042debd6d63e7de2ca4f9c0f02f8286f1b4030cac1bea04d502921cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c3ddd7042debd6d63e7de2ca4f9c0f02f8286f1b4030cac1bea04d502921cd2", kill_on_drop: false }`
[INFO] [stdout] 3c3ddd7042debd6d63e7de2ca4f9c0f02f8286f1b4030cac1bea04d502921cd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] cd51eba8b6bbbd70f95e7ef628bc47df4ce79361e2bf731072414c2d9b0e7946
[INFO] running `Command { std: "docker" "start" "-a" "cd51eba8b6bbbd70f95e7ef628bc47df4ce79361e2bf731072414c2d9b0e7946", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> tests/tests.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> tests/tests.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `should_panic`
[INFO] [stderr]  --> tests/tests.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use laboratory::{ describe, expect, should_panic, LabResult };
[INFO] [stderr]   |                                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> tests/tests.rs:15:27
[INFO] [stderr]    |
[INFO] [stderr] 15 |     ctx.before_each(move |state| {
[INFO] [stderr]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> tests/tests.rs:19:25
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ctx.after_all(move |state| {
[INFO] [stderr]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `spec`
[INFO] [stderr]   --> tests/tests.rs:24:25
[INFO] [stderr]    |
[INFO] [stderr] 24 |       suite.it("test", |spec| {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_spec`
[INFO] [stderr] 
[INFO] [stderr] warning: `laboratory` (test "tests") generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 31.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/laboratory-bfa01c73d5b34ac8)
[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]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-78aa2276b8cdf24e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test describe_a_suite ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests laboratory
[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" "cd51eba8b6bbbd70f95e7ef628bc47df4ce79361e2bf731072414c2d9b0e7946", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd51eba8b6bbbd70f95e7ef628bc47df4ce79361e2bf731072414c2d9b0e7946", kill_on_drop: false }`
[INFO] [stdout] cd51eba8b6bbbd70f95e7ef628bc47df4ce79361e2bf731072414c2d9b0e7946