[INFO] fetching crate alt_serde_json 1.0.44...
[INFO] checking alt_serde_json-1.0.44 against beta for pr-78714
[INFO] extracting crate alt_serde_json 1.0.44 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate alt_serde_json 1.0.44 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alt_serde_json 1.0.44
[INFO] finished tweaking crates.io crate alt_serde_json 1.0.44
[INFO] tweaked toml for crates.io crate alt_serde_json 1.0.44 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 5beac9b78f4c0aace5a86f544b2b97acfb1d77cf59f10d035b6e8c8d847b3d67
[INFO] running `Command { std: "docker" "start" "-a" "5beac9b78f4c0aace5a86f544b2b97acfb1d77cf59f10d035b6e8c8d847b3d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5beac9b78f4c0aace5a86f544b2b97acfb1d77cf59f10d035b6e8c8d847b3d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5beac9b78f4c0aace5a86f544b2b97acfb1d77cf59f10d035b6e8c8d847b3d67", kill_on_drop: false }`
[INFO] [stdout] 5beac9b78f4c0aace5a86f544b2b97acfb1d77cf59f10d035b6e8c8d847b3d67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 8361fa52e126c619eda490dc9d510fb63a73bbef312ec4e3f6122b2bfc34ef10
[INFO] running `Command { std: "docker" "start" "-a" "8361fa52e126c619eda490dc9d510fb63a73bbef312ec4e3f6122b2bfc34ef10", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling alt_serde v1.0.104
[INFO] [stderr]    Compiling trybuild v1.0.35
[INFO] [stderr]     Checking dissimilar v1.0.2
[INFO] [stderr]    Compiling psm v0.1.11
[INFO] [stderr]    Compiling stacker v0.1.12
[INFO] [stderr]    Compiling automod v0.1.2
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking serde_stacker v0.1.4
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking alt_serde_json v1.0.44 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.83s
[INFO] running `Command { std: "docker" "inspect" "8361fa52e126c619eda490dc9d510fb63a73bbef312ec4e3f6122b2bfc34ef10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8361fa52e126c619eda490dc9d510fb63a73bbef312ec4e3f6122b2bfc34ef10", kill_on_drop: false }`
[INFO] [stdout] 8361fa52e126c619eda490dc9d510fb63a73bbef312ec4e3f6122b2bfc34ef10