[INFO] cloning repository https://github.com/coolcat702/proc-macros
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/coolcat702/proc-macros" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoolcat702%2Fproc-macros", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoolcat702%2Fproc-macros'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72883b1c8911ed95f51e228c1809fc844316e0c9
[INFO] checking coolcat702/proc-macros/72883b1c8911ed95f51e228c1809fc844316e0c9 against master#eef00c8be8d92478e181011f24946cca3d468f0a for pr-129346
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoolcat702%2Fproc-macros" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/coolcat702/proc-macros on toolchain eef00c8be8d92478e181011f24946cca3d468f0a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eef00c8be8d92478e181011f24946cca3d468f0a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/coolcat702/proc-macros
[INFO] finished tweaking git repo https://github.com/coolcat702/proc-macros
[INFO] tweaked toml for git repo https://github.com/coolcat702/proc-macros written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/coolcat702/proc-macros 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" "+eef00c8be8d92478e181011f24946cca3d468f0a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+eef00c8be8d92478e181011f24946cca3d468f0a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96077fc2b09fabc60bd698d5d3fc90c8f7daf298b61555bc718d20fdaeda85da
[INFO] running `Command { std: "docker" "start" "-a" "96077fc2b09fabc60bd698d5d3fc90c8f7daf298b61555bc718d20fdaeda85da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96077fc2b09fabc60bd698d5d3fc90c8f7daf298b61555bc718d20fdaeda85da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96077fc2b09fabc60bd698d5d3fc90c8f7daf298b61555bc718d20fdaeda85da", kill_on_drop: false }`
[INFO] [stdout] 96077fc2b09fabc60bd698d5d3fc90c8f7daf298b61555bc718d20fdaeda85da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+eef00c8be8d92478e181011f24946cca3d468f0a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e78f89d32ac5698855d6fa7b4239abbdfac0f09568cd536b9e7690d2b022b5ce
[INFO] running `Command { std: "docker" "start" "-a" "e78f89d32ac5698855d6fa7b4239abbdfac0f09568cd536b9e7690d2b022b5ce", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking quote v1.0.36
[INFO] [stderr]     Checking syn v2.0.68
[INFO] [stderr]     Checking builder v0.1.0 (/opt/rustwide/workdir/builder)
[INFO] [stdout] error: failed to write /tmp/rustcyZnULK/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" "e78f89d32ac5698855d6fa7b4239abbdfac0f09568cd536b9e7690d2b022b5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e78f89d32ac5698855d6fa7b4239abbdfac0f09568cd536b9e7690d2b022b5ce", kill_on_drop: false }`
[INFO] [stdout] e78f89d32ac5698855d6fa7b4239abbdfac0f09568cd536b9e7690d2b022b5ce