[INFO] fetching crate sync-fd 0.1.0...
[INFO] testing sync-fd-0.1.0 against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] extracting crate sync-fd 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate sync-fd 0.1.0
[INFO] finished tweaking crates.io crate sync-fd 0.1.0
[INFO] tweaked toml for crates.io crate sync-fd 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sync-fd 0.1.0 on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sync-fd 0.1.0 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffde81149faf41bb89aad28e105bd5c42e31fcee3fb6bbbb24ea2dbfd629e9b9
[INFO] running `Command { std: "docker" "start" "-a" "ffde81149faf41bb89aad28e105bd5c42e31fcee3fb6bbbb24ea2dbfd629e9b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffde81149faf41bb89aad28e105bd5c42e31fcee3fb6bbbb24ea2dbfd629e9b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffde81149faf41bb89aad28e105bd5c42e31fcee3fb6bbbb24ea2dbfd629e9b9", kill_on_drop: false }`
[INFO] [stdout] ffde81149faf41bb89aad28e105bd5c42e31fcee3fb6bbbb24ea2dbfd629e9b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 066c4570027edc6f1f33dfb34a39b5851436e935acbb6cbeadeec52902712d54
[INFO] running `Command { std: "docker" "start" "-a" "066c4570027edc6f1f33dfb34a39b5851436e935acbb6cbeadeec52902712d54", kill_on_drop: false }`
[INFO] [stderr]    Compiling sync-fd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `blocking` is never read
[INFO] [stdout]   --> src/channel.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct MpscFdReceiver<T> {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 75 |     receiver: Receiver<T>,
[INFO] [stdout] 76 |     blocking: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_blocking` is never used
[INFO] [stdout]    --> src/channel.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn set_blocking(fd: RawFd) -> io::Result<()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_set` is never used
[INFO] [stdout]    --> src/channel.rs:209:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | impl FdSet {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn is_set(&self, fd: RawFd) -> bool {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "066c4570027edc6f1f33dfb34a39b5851436e935acbb6cbeadeec52902712d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "066c4570027edc6f1f33dfb34a39b5851436e935acbb6cbeadeec52902712d54", kill_on_drop: false }`
[INFO] [stdout] 066c4570027edc6f1f33dfb34a39b5851436e935acbb6cbeadeec52902712d54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb1d571a29116e122b2beebee569275f9c89d76570c8c3e87a9345a65577f46e
[INFO] running `Command { std: "docker" "start" "-a" "bb1d571a29116e122b2beebee569275f9c89d76570c8c3e87a9345a65577f46e", kill_on_drop: false }`
[INFO] [stderr]    Compiling sync-fd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `blocking` is never read
[INFO] [stdout]   --> src/channel.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct MpscFdReceiver<T> {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 75 |     receiver: Receiver<T>,
[INFO] [stdout] 76 |     blocking: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_blocking` is never used
[INFO] [stdout]    --> src/channel.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn set_blocking(fd: RawFd) -> io::Result<()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_set` is never used
[INFO] [stdout]    --> src/channel.rs:209:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | impl FdSet {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn is_set(&self, fd: RawFd) -> bool {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `blocking` is never read
[INFO] [stdout]   --> src/channel.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct MpscFdReceiver<T> {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 75 |     receiver: Receiver<T>,
[INFO] [stdout] 76 |     blocking: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_blocking` is never used
[INFO] [stdout]    --> src/channel.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn set_blocking(fd: RawFd) -> io::Result<()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_set` is never used
[INFO] [stdout]    --> src/channel.rs:209:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | impl FdSet {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn is_set(&self, fd: RawFd) -> bool {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "bb1d571a29116e122b2beebee569275f9c89d76570c8c3e87a9345a65577f46e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb1d571a29116e122b2beebee569275f9c89d76570c8c3e87a9345a65577f46e", kill_on_drop: false }`
[INFO] [stdout] bb1d571a29116e122b2beebee569275f9c89d76570c8c3e87a9345a65577f46e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1c5952894e9307ddac7d9298f73f7ffbd51e521b9b572d0cfbe1a6074b029dc5
[INFO] running `Command { std: "docker" "start" "-a" "1c5952894e9307ddac7d9298f73f7ffbd51e521b9b572d0cfbe1a6074b029dc5", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr] warning: field `blocking` is never read
[INFO] [stderr]   --> src/channel.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub struct MpscFdReceiver<T> {
[INFO] [stderr]    |            -------------- field in this struct
[INFO] [stderr] 75 |     receiver: Receiver<T>,
[INFO] [stderr] 76 |     blocking: bool,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `set_blocking` is never used
[INFO] [stderr]    --> src/channel.rs:115:4
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn set_blocking(fd: RawFd) -> io::Result<()> {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `is_set` is never used
[INFO] [stderr]    --> src/channel.rs:209:8
[INFO] [stderr]     |
[INFO] [stderr] 182 | impl FdSet {
[INFO] [stderr]     | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 209 |     fn is_set(&self, fd: RawFd) -> bool {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sync-fd` (lib) generated 3 warnings
[INFO] [stderr] warning: `sync-fd` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sync_fd-2ae2e2588f547976)
[INFO] [stdout] test channel::tests::test_mpsc_fd_pair ... ok
[INFO] [stdout] test channel::tests::torture_test_pipe_buffer_stress ... ok
[INFO] [stdout] test channel::tests::torture_test_rapid_mode_switching ... ok
[INFO] [stdout] test channel::tests::torture_test_concurrent_access has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "1c5952894e9307ddac7d9298f73f7ffbd51e521b9b572d0cfbe1a6074b029dc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c5952894e9307ddac7d9298f73f7ffbd51e521b9b572d0cfbe1a6074b029dc5", kill_on_drop: false }`
[INFO] [stdout] 1c5952894e9307ddac7d9298f73f7ffbd51e521b9b572d0cfbe1a6074b029dc5