[INFO] fetching crate scall 0.2.5...
[INFO] checking scall-0.2.5 against master#2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36 for pr-95819
[INFO] extracting crate scall 0.2.5 into /workspace/builds/worker-38/source
[INFO] validating manifest of crates.io crate scall 0.2.5 on toolchain 2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scall 0.2.5
[INFO] finished tweaking crates.io crate scall 0.2.5
[INFO] tweaked toml for crates.io crate scall 0.2.5 written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate crates.io crate scall 0.2.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36" "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-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac17bcd4ae9ef1e6906a9914c88fd5e07329c7b68e58f799e2bfef808a846697
[INFO] running `Command { std: "docker" "start" "-a" "ac17bcd4ae9ef1e6906a9914c88fd5e07329c7b68e58f799e2bfef808a846697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac17bcd4ae9ef1e6906a9914c88fd5e07329c7b68e58f799e2bfef808a846697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac17bcd4ae9ef1e6906a9914c88fd5e07329c7b68e58f799e2bfef808a846697", kill_on_drop: false }`
[INFO] [stdout] ac17bcd4ae9ef1e6906a9914c88fd5e07329c7b68e58f799e2bfef808a846697
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30fe108b84549e77bfef172f95b321b50db5bdbff423b86b2a775c4019c8d999
[INFO] running `Command { std: "docker" "start" "-a" "30fe108b84549e77bfef172f95b321b50db5bdbff423b86b2a775c4019c8d999", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling scall v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.02s
[INFO] running `Command { std: "docker" "inspect" "30fe108b84549e77bfef172f95b321b50db5bdbff423b86b2a775c4019c8d999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30fe108b84549e77bfef172f95b321b50db5bdbff423b86b2a775c4019c8d999", kill_on_drop: false }`
[INFO] [stdout] 30fe108b84549e77bfef172f95b321b50db5bdbff423b86b2a775c4019c8d999