[INFO] fetching crate varflags 0.2.3...
[INFO] checking varflags-0.2.3 against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] extracting crate varflags 0.2.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate varflags 0.2.3 on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varflags 0.2.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate varflags 0.2.3
[INFO] tweaked toml for crates.io crate varflags 0.2.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitworks v0.2.0
[INFO] [stderr]   Downloaded varflags_attribute v0.2.2
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a00bfc99300a275dda36a37b81c1ddef3474be9e42fd36f92e5da4514ceca40
[INFO] running `Command { std: "docker" "start" "-a" "7a00bfc99300a275dda36a37b81c1ddef3474be9e42fd36f92e5da4514ceca40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a00bfc99300a275dda36a37b81c1ddef3474be9e42fd36f92e5da4514ceca40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a00bfc99300a275dda36a37b81c1ddef3474be9e42fd36f92e5da4514ceca40", kill_on_drop: false }`
[INFO] [stdout] 7a00bfc99300a275dda36a37b81c1ddef3474be9e42fd36f92e5da4514ceca40
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c24c724d63ac56d8133713b70899a07337244e2cc6b0af682594c0388c04d23
[INFO] running `Command { std: "docker" "start" "-a" "3c24c724d63ac56d8133713b70899a07337244e2cc6b0af682594c0388c04d23", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling bitworks v0.2.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stdout] error: failed to write to `/opt/rustwide/target/debug/deps/rmetaA3Tvuy/full.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" "3c24c724d63ac56d8133713b70899a07337244e2cc6b0af682594c0388c04d23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c24c724d63ac56d8133713b70899a07337244e2cc6b0af682594c0388c04d23", kill_on_drop: false }`
[INFO] [stdout] 3c24c724d63ac56d8133713b70899a07337244e2cc6b0af682594c0388c04d23