[INFO] fetching crate sync-fd 0.1.0...
[INFO] testing sync-fd-0.1.0 against master#160e7623e8cbbf1feab2b6e2a24733a98c7bde9c for pr-145628
[INFO] extracting crate sync-fd 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sync-fd 0.1.0 on toolchain 160e7623e8cbbf1feab2b6e2a24733a98c7bde9c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "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" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47ecd6bf132f2b5c2f8b3e24c95664e86ae600f66e470a4190a94e7600ef72e2
[INFO] running `Command { std: "docker" "start" "-a" "47ecd6bf132f2b5c2f8b3e24c95664e86ae600f66e470a4190a94e7600ef72e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47ecd6bf132f2b5c2f8b3e24c95664e86ae600f66e470a4190a94e7600ef72e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47ecd6bf132f2b5c2f8b3e24c95664e86ae600f66e470a4190a94e7600ef72e2", kill_on_drop: false }`
[INFO] [stdout] 47ecd6bf132f2b5c2f8b3e24c95664e86ae600f66e470a4190a94e7600ef72e2
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a6f883e4a72b145bba8feec667adbd13a8546080ae10503a116e87f519e8482
[INFO] running `Command { std: "docker" "start" "-a" "7a6f883e4a72b145bba8feec667adbd13a8546080ae10503a116e87f519e8482", 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 0.38s
[INFO] running `Command { std: "docker" "inspect" "7a6f883e4a72b145bba8feec667adbd13a8546080ae10503a116e87f519e8482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a6f883e4a72b145bba8feec667adbd13a8546080ae10503a116e87f519e8482", kill_on_drop: false }`
[INFO] [stdout] 7a6f883e4a72b145bba8feec667adbd13a8546080ae10503a116e87f519e8482
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ed00b2f14b41fefa1c59fe029e86fb4dc1bcb80aedda9bb5fd82d6d8975ae7d
[INFO] running `Command { std: "docker" "start" "-a" "6ed00b2f14b41fefa1c59fe029e86fb4dc1bcb80aedda9bb5fd82d6d8975ae7d", kill_on_drop: false }`
[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]    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 `test` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "6ed00b2f14b41fefa1c59fe029e86fb4dc1bcb80aedda9bb5fd82d6d8975ae7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ed00b2f14b41fefa1c59fe029e86fb4dc1bcb80aedda9bb5fd82d6d8975ae7d", kill_on_drop: false }`
[INFO] [stdout] 6ed00b2f14b41fefa1c59fe029e86fb4dc1bcb80aedda9bb5fd82d6d8975ae7d
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 46d1909647cbde30033e7ac1a4f55b090203360785bee088a4fc9d71da8f81e9
[INFO] running `Command { std: "docker" "start" "-a" "46d1909647cbde30033e7ac1a4f55b090203360785bee088a4fc9d71da8f81e9", kill_on_drop: false }`
[INFO] [stderr] warning: field `blocking` is never read
[INFO] [stdout] 
[INFO] [stderr]   --> src/channel.rs:76:5
[INFO] [stdout] running 4 tests
[INFO] [stderr]    |
[INFO] [stdout] test channel::tests::test_mpsc_fd_pair ... ok
[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 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sync_fd-2ae2e2588f547976)
[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" "46d1909647cbde30033e7ac1a4f55b090203360785bee088a4fc9d71da8f81e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46d1909647cbde30033e7ac1a4f55b090203360785bee088a4fc9d71da8f81e9", kill_on_drop: false }`
[INFO] [stdout] 46d1909647cbde30033e7ac1a4f55b090203360785bee088a4fc9d71da8f81e9