[INFO] cloning repository https://github.com/RustyYato/double-buffer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RustyYato/double-buffer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustyYato%2Fdouble-buffer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustyYato%2Fdouble-buffer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f931f9a779a3999d30eec75c70047e755f869af
[INFO] checking RustyYato/double-buffer against master#16b569057e4d1591b4bee05f10df34000308dedc for pr-127827
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustyYato%2Fdouble-buffer" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RustyYato/double-buffer on toolchain 16b569057e4d1591b4bee05f10df34000308dedc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RustyYato/double-buffer
[INFO] finished tweaking git repo https://github.com/RustyYato/double-buffer
[INFO] tweaked toml for git repo https://github.com/RustyYato/double-buffer written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/RustyYato/double-buffer 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" "+16b569057e4d1591b4bee05f10df34000308dedc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking RustyYato/double-buffer against try#8a6640bd72b80869b16392026cb3aa8ce8e3f9b7 for pr-127827
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustyYato%2Fdouble-buffer" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RustyYato/double-buffer on toolchain 8a6640bd72b80869b16392026cb3aa8ce8e3f9b7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a6640bd72b80869b16392026cb3aa8ce8e3f9b7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RustyYato/double-buffer
[INFO] finished tweaking git repo https://github.com/RustyYato/double-buffer
[INFO] tweaked toml for git repo https://github.com/RustyYato/double-buffer written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/RustyYato/double-buffer 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" "+8a6640bd72b80869b16392026cb3aa8ce8e3f9b7" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+8a6640bd72b80869b16392026cb3aa8ce8e3f9b7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3bf7b077cb8cab6321ce008f1be8b29f1328406874ee4744062442e7ec49988
[INFO] running `Command { std: "docker" "start" "-a" "b3bf7b077cb8cab6321ce008f1be8b29f1328406874ee4744062442e7ec49988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3bf7b077cb8cab6321ce008f1be8b29f1328406874ee4744062442e7ec49988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3bf7b077cb8cab6321ce008f1be8b29f1328406874ee4744062442e7ec49988", kill_on_drop: false }`
[INFO] [stdout] b3bf7b077cb8cab6321ce008f1be8b29f1328406874ee4744062442e7ec49988
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+8a6640bd72b80869b16392026cb3aa8ce8e3f9b7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06a0b98189fd98752ab3c0d3546b39c7da4f8e8ba22837fd1c348550329482c9
[INFO] running `Command { std: "docker" "start" "-a" "06a0b98189fd98752ab3c0d3546b39c7da4f8e8ba22837fd1c348550329482c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking triomphe v0.1.11
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking rc-box v1.2.0
[INFO] [stderr]     Checking allocator-api2 v0.2.18
[INFO] [stderr]     Checking ahash v0.8.11
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking dbuf v0.1.0 (/opt/rustwide/workdir/dbuf)
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking chmap v0.1.0 (/opt/rustwide/workdir/chmap)
[INFO] [stdout] warning: field `reader` is never read
[INFO] [stdout]   --> chmap/src/lib.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct ReadGuard<'a, T: ?Sized, K, V, S> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 32 |     reader: dbuf::raw::ReaderGuard<'a, T, TablePointer<(K, V), S>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `reader` is never read
[INFO] [stdout]   --> chmap/src/lib.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct ReadGuard<'a, T: ?Sized, K, V, S> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 32 |     reader: dbuf::raw::ReaderGuard<'a, T, TablePointer<(K, V), S>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pollster-macro v0.1.0
[INFO] [stderr]     Checking pollster v0.3.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `Command { std: "docker" "inspect" "06a0b98189fd98752ab3c0d3546b39c7da4f8e8ba22837fd1c348550329482c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06a0b98189fd98752ab3c0d3546b39c7da4f8e8ba22837fd1c348550329482c9", kill_on_drop: false }`
[INFO] [stdout] 06a0b98189fd98752ab3c0d3546b39c7da4f8e8ba22837fd1c348550329482c9