[INFO] fetching crate singleton-attr 0.1.9...
[INFO] checking singleton-attr-0.1.9 against master#d8810e3e2dab96778d20dd6d746ff95465515509 for pr-137033
[INFO] extracting crate singleton-attr 0.1.9 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate singleton-attr 0.1.9 on toolchain d8810e3e2dab96778d20dd6d746ff95465515509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate singleton-attr 0.1.9
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate singleton-attr 0.1.9
[INFO] tweaked toml for crates.io crate singleton-attr 0.1.9 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate singleton-attr 0.1.9 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" "+d8810e3e2dab96778d20dd6d746ff95465515509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded singleton-attr-proc-macro v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f93517a24180316f8f1c688de73140bee8f34fb6c487ff3b96e7afb5d3aecc0a
[INFO] running `Command { std: "docker" "start" "-a" "f93517a24180316f8f1c688de73140bee8f34fb6c487ff3b96e7afb5d3aecc0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f93517a24180316f8f1c688de73140bee8f34fb6c487ff3b96e7afb5d3aecc0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f93517a24180316f8f1c688de73140bee8f34fb6c487ff3b96e7afb5d3aecc0a", kill_on_drop: false }`
[INFO] [stdout] f93517a24180316f8f1c688de73140bee8f34fb6c487ff3b96e7afb5d3aecc0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cfbd85dd283e679cd4e5a63dcde419233f67ace369313f473efacce2a6df685
[INFO] running `Command { std: "docker" "start" "-a" "2cfbd85dd283e679cd4e5a63dcde419233f67ace369313f473efacce2a6df685", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.75
[INFO] [stdout] error: failed to write /tmp/rustcmrmkY5/lib.rmeta: No space left on device (os error 28)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2cfbd85dd283e679cd4e5a63dcde419233f67ace369313f473efacce2a6df685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cfbd85dd283e679cd4e5a63dcde419233f67ace369313f473efacce2a6df685", kill_on_drop: false }`
[INFO] [stdout] 2cfbd85dd283e679cd4e5a63dcde419233f67ace369313f473efacce2a6df685