[INFO] fetching crate qmc 2.15.0...
[INFO] checking qmc-2.15.0 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] extracting crate qmc 2.15.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate qmc 2.15.0 on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qmc 2.15.0
[INFO] finished tweaking crates.io crate qmc 2.15.0
[INFO] tweaked toml for crates.io crate qmc 2.15.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate qmc 2.15.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91b0386b038bb64fbea42829e36cb925541ceb534ad0c4f408bca28d23f9f474
[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" "91b0386b038bb64fbea42829e36cb925541ceb534ad0c4f408bca28d23f9f474", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91b0386b038bb64fbea42829e36cb925541ceb534ad0c4f408bca28d23f9f474", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91b0386b038bb64fbea42829e36cb925541ceb534ad0c4f408bca28d23f9f474", kill_on_drop: false }`
[INFO] [stdout] 91b0386b038bb64fbea42829e36cb925541ceb534ad0c4f408bca28d23f9f474
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce35e24124b37cbee42bc7796da033c4ff9949172f8f08af345c53d66684b4bd
[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" "ce35e24124b37cbee42bc7796da033c4ff9949172f8f08af345c53d66684b4bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking getrandom v0.2.1
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand_isaac v0.3.0
[INFO] [stderr]     Checking rand v0.8.1
[INFO] [stderr]     Checking qmc v2.15.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.52s
[INFO] running `Command { std: "docker" "inspect" "ce35e24124b37cbee42bc7796da033c4ff9949172f8f08af345c53d66684b4bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce35e24124b37cbee42bc7796da033c4ff9949172f8f08af345c53d66684b4bd", kill_on_drop: false }`
[INFO] [stdout] ce35e24124b37cbee42bc7796da033c4ff9949172f8f08af345c53d66684b4bd