[INFO] fetching crate rvcr 0.2.1...
[INFO] testing rvcr-0.2.1 against try#7af779037716ae4125ceabb429791b4cf5dd0a43 for pr-136932
[INFO] extracting crate rvcr 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate rvcr 0.2.1 on toolchain 7af779037716ae4125ceabb429791b4cf5dd0a43
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rvcr 0.2.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rvcr 0.2.1
[INFO] tweaked toml for crates.io crate rvcr 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "generate-lockfile" "--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]      Locking 231 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.21.7 (available: v0.22.1)
[INFO] [stderr]       Adding http v0.2.12 (available: v1.2.0)
[INFO] [stderr]       Adding reqwest v0.11.27 (available: v0.12.12)
[INFO] [stderr]       Adding reqwest-middleware v0.2.5 (available: v0.4.0)
[INFO] [stderr]       Adding zip v0.6.6 (available: v2.2.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vcr-cassette v2.0.1
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 776738e3f5ddb0e2e286cf732330a368d08dc904f874a307ec1903dcfc932862
[INFO] running `Command { std: "docker" "start" "-a" "776738e3f5ddb0e2e286cf732330a368d08dc904f874a307ec1903dcfc932862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "776738e3f5ddb0e2e286cf732330a368d08dc904f874a307ec1903dcfc932862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "776738e3f5ddb0e2e286cf732330a368d08dc904f874a307ec1903dcfc932862", kill_on_drop: false }`
[INFO] [stdout] 776738e3f5ddb0e2e286cf732330a368d08dc904f874a307ec1903dcfc932862
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2d6255edc0267eb25a64b70f0f3ad475a56eb8249a7c05595d0bd3f60d7673d
[INFO] running `Command { std: "docker" "start" "-a" "d2d6255edc0267eb25a64b70f0f3ad475a56eb8249a7c05595d0bd3f60d7673d", kill_on_drop: false }`
[INFO] [stderr] error: failed to create directory `/opt/rustwide/target/debug/build/serde-4ba7f8d6eff97df5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] running `Command { std: "docker" "inspect" "d2d6255edc0267eb25a64b70f0f3ad475a56eb8249a7c05595d0bd3f60d7673d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2d6255edc0267eb25a64b70f0f3ad475a56eb8249a7c05595d0bd3f60d7673d", kill_on_drop: false }`
[INFO] [stdout] d2d6255edc0267eb25a64b70f0f3ad475a56eb8249a7c05595d0bd3f60d7673d