[INFO] fetching crate wasmtime 0.20.0...
[INFO] checking wasmtime-0.20.0 against master#d902752866cbbdb331e3cf28ff6bba86ab0f6c62 for pr-77271
[INFO] extracting crate wasmtime 0.20.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate wasmtime 0.20.0 on toolchain d902752866cbbdb331e3cf28ff6bba86ab0f6c62
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmtime 0.20.0
[INFO] finished tweaking crates.io crate wasmtime 0.20.0
[INFO] tweaked toml for crates.io crate wasmtime 0.20.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd638e135ef37f19f964a3e9b2eff574e3fb9b9e2c8dd06210f28712ae0c6d9a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cd638e135ef37f19f964a3e9b2eff574e3fb9b9e2c8dd06210f28712ae0c6d9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd638e135ef37f19f964a3e9b2eff574e3fb9b9e2c8dd06210f28712ae0c6d9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd638e135ef37f19f964a3e9b2eff574e3fb9b9e2c8dd06210f28712ae0c6d9a", kill_on_drop: false }`
[INFO] [stdout] cd638e135ef37f19f964a3e9b2eff574e3fb9b9e2c8dd06210f28712ae0c6d9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f56463f4ceabb945effb04b22e843f0644ea2ae4bb34e1f6606e8b2a6b1bf5af
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f56463f4ceabb945effb04b22e843f0644ea2ae4bb34e1f6606e8b2a6b1bf5af", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasmtime-cache v0.20.0
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking errno v0.2.6
[INFO] [stderr]     Checking regalloc v0.0.30
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]    Compiling scroll_derive v0.10.2
[INFO] [stderr]     Checking backtrace v0.3.51
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking object v0.21.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking file-per-thread-logger v0.1.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking rayon v1.4.1
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]     Checking scroll v0.10.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling wasmtime-runtime v0.20.0
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]     Checking cranelift-codegen v0.67.0
[INFO] [stderr]     Checking cranelift-frontend v0.67.0
[INFO] [stderr]     Checking cranelift-native v0.67.0
[INFO] [stderr]     Checking cranelift-wasm v0.67.0
[INFO] [stderr]     Checking wasmtime-environ v0.20.0
[INFO] [stderr]     Checking wasmtime-debug v0.20.0
[INFO] [stderr]     Checking wasmtime-cranelift v0.20.0
[INFO] [stderr]     Checking wasmtime-obj v0.20.0
[INFO] [stderr]     Checking wasmtime-profiling v0.20.0
[INFO] [stderr]     Checking wasmtime-jit v0.20.0
[INFO] [stderr]     Checking zstd-safe v2.0.5+zstd.1.4.5
[INFO] [stderr]     Checking zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]     Checking wasmtime v0.20.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 58s
[INFO] running `Command { std: "docker" "inspect" "f56463f4ceabb945effb04b22e843f0644ea2ae4bb34e1f6606e8b2a6b1bf5af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f56463f4ceabb945effb04b22e843f0644ea2ae4bb34e1f6606e8b2a6b1bf5af", kill_on_drop: false }`
[INFO] [stdout] f56463f4ceabb945effb04b22e843f0644ea2ae4bb34e1f6606e8b2a6b1bf5af