[INFO] fetching crate spark-signals 0.3.0...
[INFO] testing spark-signals-0.3.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate spark-signals 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate spark-signals 0.3.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate spark-signals 0.3.0
[INFO] tweaked toml for crates.io crate spark-signals 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spark-signals 0.3.0 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 crates.io crate spark-signals 0.3.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc828ac8d4a76b64ae1dc9c31f74b7303c93ff5f7dd90d76c3f6963a447f8b57
[INFO] running `Command { std: "docker" "start" "-a" "cc828ac8d4a76b64ae1dc9c31f74b7303c93ff5f7dd90d76c3f6963a447f8b57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc828ac8d4a76b64ae1dc9c31f74b7303c93ff5f7dd90d76c3f6963a447f8b57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc828ac8d4a76b64ae1dc9c31f74b7303c93ff5f7dd90d76c3f6963a447f8b57", kill_on_drop: false }`
[INFO] [stdout] cc828ac8d4a76b64ae1dc9c31f74b7303c93ff5f7dd90d76c3f6963a447f8b57
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56124a2fa912a7d0acf4dd29d2910706896b8d735eb90abd7d33099035a43c78
[INFO] running `Command { std: "docker" "start" "-a" "56124a2fa912a7d0acf4dd29d2910706896b8d735eb90abd7d33099035a43c78", kill_on_drop: false }`
[INFO] [stderr]    Compiling spark-signals v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/notify.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |         libc::syscall(
[INFO] [stdout]    |         ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/notify.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             libc::SYS_futex,
[INFO] [stdout]    |             ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/notify.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             libc::FUTEX_WAKE,
[INFO] [stdout]    |             ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         libc::syscall(
[INFO] [stdout]    |         ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |             libc::SYS_futex,
[INFO] [stdout]    |             ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:73:13
[INFO] [stdout]    |
[INFO] [stdout] 73 |             libc::FUTEX_WAIT,
[INFO] [stdout]    |             ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         libc::syscall(
[INFO] [stdout]    |         ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |             libc::SYS_futex,
[INFO] [stdout]    |             ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |             libc::FUTEX_WAIT,
[INFO] [stdout]    |             ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:92:32
[INFO] [stdout]    |
[INFO] [stdout] 92 |             &timeout as *const libc::timespec,
[INFO] [stdout]    |                                ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |             std::ptr::null::<libc::timespec>(),
[INFO] [stdout]    |                              ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]   --> src/shared/mod.rs:82:19
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let timeout = libc::timespec {
[INFO] [stdout]    |                   ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spark-signals` (lib) due to 12 previous errors
[INFO] running `Command { std: "docker" "inspect" "56124a2fa912a7d0acf4dd29d2910706896b8d735eb90abd7d33099035a43c78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56124a2fa912a7d0acf4dd29d2910706896b8d735eb90abd7d33099035a43c78", kill_on_drop: false }`
[INFO] [stdout] 56124a2fa912a7d0acf4dd29d2910706896b8d735eb90abd7d33099035a43c78