[INFO] fetching crate pro_lang_ir 3.0.0-rc2...
[INFO] checking pro_lang_ir-3.0.0-rc2 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate pro_lang_ir 3.0.0-rc2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pro_lang_ir 3.0.0-rc2 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pro_lang_ir 3.0.0-rc2
[INFO] finished tweaking crates.io crate pro_lang_ir 3.0.0-rc2
[INFO] tweaked toml for crates.io crate pro_lang_ir 3.0.0-rc2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8084aa78fa796132e6f7fa13ea668c493263acf93a79836c17a1c787c599cb2e
[INFO] running `Command { std: "docker" "start" "-a" "8084aa78fa796132e6f7fa13ea668c493263acf93a79836c17a1c787c599cb2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8084aa78fa796132e6f7fa13ea668c493263acf93a79836c17a1c787c599cb2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8084aa78fa796132e6f7fa13ea668c493263acf93a79836c17a1c787c599cb2e", kill_on_drop: false }`
[INFO] [stdout] 8084aa78fa796132e6f7fa13ea668c493263acf93a79836c17a1c787c599cb2e
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4c537fb6f4dd406c455d96d5ee65b04c81e828d5eba4495f26df4cc931426cd9
[INFO] running `Command { std: "docker" "start" "-a" "4c537fb6f4dd406c455d96d5ee65b04c81e828d5eba4495f26df4cc931426cd9", kill_on_drop: false }`
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking blake2 v0.9.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking pro_lang_ir v3.0.0-rc2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.43s
[INFO] running `Command { std: "docker" "inspect" "4c537fb6f4dd406c455d96d5ee65b04c81e828d5eba4495f26df4cc931426cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c537fb6f4dd406c455d96d5ee65b04c81e828d5eba4495f26df4cc931426cd9", kill_on_drop: false }`
[INFO] [stdout] 4c537fb6f4dd406c455d96d5ee65b04c81e828d5eba4495f26df4cc931426cd9