[INFO] cloning repository https://github.com/kmdreko/mpmc_ring
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kmdreko/mpmc_ring" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmdreko%2Fmpmc_ring", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmdreko%2Fmpmc_ring'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ee3a1c8b525f9da9e940dfe1b3c00167e78661e
[INFO] testing kmdreko/mpmc_ring against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmdreko%2Fmpmc_ring" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kmdreko/mpmc_ring
[INFO] finished tweaking git repo https://github.com/kmdreko/mpmc_ring
[INFO] tweaked toml for git repo https://github.com/kmdreko/mpmc_ring written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kmdreko/mpmc_ring on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kmdreko/mpmc_ring 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing kmdreko/mpmc_ring against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmdreko%2Fmpmc_ring" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kmdreko/mpmc_ring
[INFO] finished tweaking git repo https://github.com/kmdreko/mpmc_ring
[INFO] tweaked toml for git repo https://github.com/kmdreko/mpmc_ring written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kmdreko/mpmc_ring on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kmdreko/mpmc_ring 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a003e70826613f571c4fa28e67ece0c2eaa842eb09eb5a0eb54b46ce01fe051a
[INFO] running `Command { std: "docker" "start" "-a" "a003e70826613f571c4fa28e67ece0c2eaa842eb09eb5a0eb54b46ce01fe051a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a003e70826613f571c4fa28e67ece0c2eaa842eb09eb5a0eb54b46ce01fe051a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a003e70826613f571c4fa28e67ece0c2eaa842eb09eb5a0eb54b46ce01fe051a", kill_on_drop: false }`
[INFO] [stdout] a003e70826613f571c4fa28e67ece0c2eaa842eb09eb5a0eb54b46ce01fe051a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f4ec2100886ad15e97fad99f4871c65bfda69a4021d093ab4507425eab6c0f4
[INFO] running `Command { std: "docker" "start" "-a" "7f4ec2100886ad15e97fad99f4871c65bfda69a4021d093ab4507425eab6c0f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling mpmc-ring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:179:30
[INFO] [stdout]     |
[INFO] [stdout] 179 |             if self.read_end.compare_and_swap(old_read_end, new_read_end, Ordering::SeqCst) == old_read_end {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:215:31
[INFO] [stdout]     |
[INFO] [stdout] 215 |             if self.write_end.compare_and_swap(old_write_end, new_write_end, Ordering::SeqCst) == old_write_end {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "7f4ec2100886ad15e97fad99f4871c65bfda69a4021d093ab4507425eab6c0f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f4ec2100886ad15e97fad99f4871c65bfda69a4021d093ab4507425eab6c0f4", kill_on_drop: false }`
[INFO] [stdout] 7f4ec2100886ad15e97fad99f4871c65bfda69a4021d093ab4507425eab6c0f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8ac0a596896f8660fd919a9dd0233494290e3a609c381ec8d65a3792a07be2b
[INFO] running `Command { std: "docker" "start" "-a" "a8ac0a596896f8660fd919a9dd0233494290e3a609c381ec8d65a3792a07be2b", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:179:30
[INFO] [stdout]     |
[INFO] [stdout] 179 |             if self.read_end.compare_and_swap(old_read_end, new_read_end, Ordering::SeqCst) == old_read_end {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:215:31
[INFO] [stdout]     |
[INFO] [stdout] 215 |             if self.write_end.compare_and_swap(old_write_end, new_write_end, Ordering::SeqCst) == old_write_end {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mpmc-ring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:179:30
[INFO] [stdout]     |
[INFO] [stdout] 179 |             if self.read_end.compare_and_swap(old_read_end, new_read_end, Ordering::SeqCst) == old_read_end {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:215:31
[INFO] [stdout]     |
[INFO] [stdout] 215 |             if self.write_end.compare_and_swap(old_write_end, new_write_end, Ordering::SeqCst) == old_write_end {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "a8ac0a596896f8660fd919a9dd0233494290e3a609c381ec8d65a3792a07be2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8ac0a596896f8660fd919a9dd0233494290e3a609c381ec8d65a3792a07be2b", kill_on_drop: false }`
[INFO] [stdout] a8ac0a596896f8660fd919a9dd0233494290e3a609c381ec8d65a3792a07be2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 030de01dba1f92f615aa65d450302f67b7f66a53afb1c080ed882b83dbd961bc
[INFO] running `Command { std: "docker" "start" "-a" "030de01dba1f92f615aa65d450302f67b7f66a53afb1c080ed882b83dbd961bc", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/lib.rs:179:30
[INFO] [stderr]     |
[INFO] [stderr] 179 |             if self.read_end.compare_and_swap(old_read_end, new_read_end, Ordering::SeqCst) == old_read_end {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/lib.rs:215:31
[INFO] [stderr]     |
[INFO] [stderr] 215 |             if self.write_end.compare_and_swap(old_write_end, new_write_end, Ordering::SeqCst) == old_write_end {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mpmc-ring` (lib) generated 2 warnings
[INFO] [stderr] warning: `mpmc-ring` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mpmc_ring-e1157fb03eb08412)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::can_send_and_recv_single_value ... ok
[INFO] [stdout] test tests::can_send_and_recv_multiple_values ... ok
[INFO] [stdout] test tests::can_send_and_recv_from_different_threads ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mpmc_ring
[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" "030de01dba1f92f615aa65d450302f67b7f66a53afb1c080ed882b83dbd961bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030de01dba1f92f615aa65d450302f67b7f66a53afb1c080ed882b83dbd961bc", kill_on_drop: false }`
[INFO] [stdout] 030de01dba1f92f615aa65d450302f67b7f66a53afb1c080ed882b83dbd961bc