[INFO] cloning repository https://github.com/0xcrust/xlock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0xcrust/xlock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrust%2Fxlock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrust%2Fxlock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec42f3529a5cbaef31d552a2eba44f897a7a43f5
[INFO] testing 0xcrust/xlock against master#d7bd9cd469ff6871420007f091ef52fc32d2ca99 for pr-121417
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrust%2Fxlock" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0xcrust/xlock on toolchain d7bd9cd469ff6871420007f091ef52fc32d2ca99
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/0xcrust/xlock
[INFO] finished tweaking git repo https://github.com/0xcrust/xlock
[INFO] tweaked toml for git repo https://github.com/0xcrust/xlock written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/0xcrust/xlock already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-wait v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46fe4a410678364a4515034c44c5364b2e0e1c730edf1455a0ca19c38bf73d24
[INFO] running `Command { std: "docker" "start" "-a" "46fe4a410678364a4515034c44c5364b2e0e1c730edf1455a0ca19c38bf73d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46fe4a410678364a4515034c44c5364b2e0e1c730edf1455a0ca19c38bf73d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46fe4a410678364a4515034c44c5364b2e0e1c730edf1455a0ca19c38bf73d24", kill_on_drop: false }`
[INFO] [stdout] 46fe4a410678364a4515034c44c5364b2e0e1c730edf1455a0ca19c38bf73d24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e3784d07796af4d8f0c3f348bbaabfeeab5ced41f38e1cff4f9a9724800b75a
[INFO] running `Command { std: "docker" "start" "-a" "8e3784d07796af4d8f0c3f348bbaabfeeab5ced41f38e1cff4f9a9724800b75a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling atomic-wait v1.1.0
[INFO] [stderr]    Compiling xlock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "8e3784d07796af4d8f0c3f348bbaabfeeab5ced41f38e1cff4f9a9724800b75a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e3784d07796af4d8f0c3f348bbaabfeeab5ced41f38e1cff4f9a9724800b75a", kill_on_drop: false }`
[INFO] [stdout] 8e3784d07796af4d8f0c3f348bbaabfeeab5ced41f38e1cff4f9a9724800b75a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 471560ff60a3c2d5df1830214dc774cc8ddbe50194cc3ce7260be487cd6ad8ef
[INFO] running `Command { std: "docker" "start" "-a" "471560ff60a3c2d5df1830214dc774cc8ddbe50194cc3ce7260be487cd6ad8ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling xlock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Ordering` is imported redundantly
[INFO] [stdout]   --> src/sem.rs:74:42
[INFO] [stdout]    |
[INFO] [stdout] 73 |     use super::*;
[INFO] [stdout]    |         -------- the item `Ordering` is already imported here
[INFO] [stdout] 74 |     use std::sync::atomic::{AtomicUsize, Ordering};
[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` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "471560ff60a3c2d5df1830214dc774cc8ddbe50194cc3ce7260be487cd6ad8ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "471560ff60a3c2d5df1830214dc774cc8ddbe50194cc3ce7260be487cd6ad8ef", kill_on_drop: false }`
[INFO] [stdout] 471560ff60a3c2d5df1830214dc774cc8ddbe50194cc3ce7260be487cd6ad8ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5284b8ce517814457e6b2a103b61717ba39e509852fd9cbbecdec82c0d7560ff
[INFO] running `Command { std: "docker" "start" "-a" "5284b8ce517814457e6b2a103b61717ba39e509852fd9cbbecdec82c0d7560ff", kill_on_drop: false }`
[INFO] [stderr] warning: the item `Ordering` is imported redundantly
[INFO] [stderr]   --> src/sem.rs:74:42
[INFO] [stderr]    |
[INFO] [stderr] 73 |     use super::*;
[INFO] [stderr]    |         -------- the item `Ordering` is already imported here
[INFO] [stderr] 74 |     use std::sync::atomic::{AtomicUsize, Ordering};
[INFO] [stderr]    |                                          ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `xlock` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/xlock-700e47ccdb7cdb4b)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test mutex::test::mutex_test_single_thread ... ok
[INFO] [stdout] test mutex::test::mutex_test_multi_threads ... ok
[INFO] [stdout] test sem::test::everyone_gets_their_chance ... ok
[INFO] [stdout] test sem::test::waits_when_max_guards_active ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests xlock
[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" "5284b8ce517814457e6b2a103b61717ba39e509852fd9cbbecdec82c0d7560ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5284b8ce517814457e6b2a103b61717ba39e509852fd9cbbecdec82c0d7560ff", kill_on_drop: false }`
[INFO] [stdout] 5284b8ce517814457e6b2a103b61717ba39e509852fd9cbbecdec82c0d7560ff