[INFO] fetching crate big-o-test 0.2.6...
[INFO] checking big-o-test-0.2.6 against master#bd54536e124b3046f607a930951512605824f4e3 for pr-114776
[INFO] extracting crate big-o-test 0.2.6 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate big-o-test 0.2.6 on toolchain bd54536e124b3046f607a930951512605824f4e3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd54536e124b3046f607a930951512605824f4e3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate big-o-test 0.2.6
[INFO] finished tweaking crates.io crate big-o-test 0.2.6
[INFO] tweaked toml for crates.io crate big-o-test 0.2.6 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd54536e124b3046f607a930951512605824f4e3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd54536e124b3046f607a930951512605824f4e3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spin_sleep v1.1.1
[INFO] [stderr]   Downloaded serial_test v0.8.0
[INFO] [stderr]   Downloaded serial_test_derive v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:84cb280c7acaf12c1f874411053406050a24f846e52f817d4d9e64bcbe5ce959" "/opt/rustwide/cargo-home/bin/cargo" "+bd54536e124b3046f607a930951512605824f4e3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e74f066bfe13d0893272b0c54e7bb0c0a0486018a2fc9b6c54a6d949efc8508d
[INFO] running `Command { std: "docker" "start" "-a" "e74f066bfe13d0893272b0c54e7bb0c0a0486018a2fc9b6c54a6d949efc8508d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e74f066bfe13d0893272b0c54e7bb0c0a0486018a2fc9b6c54a6d949efc8508d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e74f066bfe13d0893272b0c54e7bb0c0a0486018a2fc9b6c54a6d949efc8508d", kill_on_drop: false }`
[INFO] [stdout] e74f066bfe13d0893272b0c54e7bb0c0a0486018a2fc9b6c54a6d949efc8508d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:84cb280c7acaf12c1f874411053406050a24f846e52f817d4d9e64bcbe5ce959" "/opt/rustwide/cargo-home/bin/cargo" "+bd54536e124b3046f607a930951512605824f4e3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26e9088def7021e43628daaf50e333cec06dbc515f454f110635cf242b913346
[INFO] running `Command { std: "docker" "start" "-a" "26e9088def7021e43628daaf50e333cec06dbc515f454f110635cf242b913346", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking parking_lot_core v0.8.6
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking spin_sleep v1.1.1
[INFO] [stderr]    Compiling serial_test_derive v0.8.0
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking big-o-test v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `max_retry_attempts`
[INFO] [stdout]   --> src/runners/standard.rs:32:74
[INFO] [stdout]    |
[INFO] [stdout] 32 |                      (test_name:                &str,                    max_retry_attempts:        u32,
[INFO] [stdout]    |                                                                          ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_retry_attempts`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking serial_test v0.8.0
[INFO] [stdout] warning: unused variable: `max_retry_attempts`
[INFO] [stdout]   --> src/runners/standard.rs:32:74
[INFO] [stdout]    |
[INFO] [stdout] 32 |                      (test_name:                &str,                    max_retry_attempts:        u32,
[INFO] [stdout]    |                                                                          ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_retry_attempts`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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 7.10s
[INFO] running `Command { std: "docker" "inspect" "26e9088def7021e43628daaf50e333cec06dbc515f454f110635cf242b913346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26e9088def7021e43628daaf50e333cec06dbc515f454f110635cf242b913346", kill_on_drop: false }`
[INFO] [stdout] 26e9088def7021e43628daaf50e333cec06dbc515f454f110635cf242b913346