[INFO] fetching crate reaper-medium 0.1.0...
[INFO] checking reaper-medium-0.1.0 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate reaper-medium 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate reaper-medium 0.1.0 on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reaper-medium 0.1.0
[INFO] finished tweaking crates.io crate reaper-medium 0.1.0
[INFO] tweaked toml for crates.io crate reaper-medium 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded helgoboss-midi v0.1.0
[INFO] [stderr]   Downloaded c_str_macro v1.0.2
[INFO] [stderr]   Downloaded reaper-low v0.1.0
[INFO] [stderr]   Downloaded vst v0.2.0
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a098c42cccdf63a57b25b176dbe0240d3097d4ace5ffe8637d947ccb56cc2279
[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" "a098c42cccdf63a57b25b176dbe0240d3097d4ace5ffe8637d947ccb56cc2279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a098c42cccdf63a57b25b176dbe0240d3097d4ace5ffe8637d947ccb56cc2279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a098c42cccdf63a57b25b176dbe0240d3097d4ace5ffe8637d947ccb56cc2279", kill_on_drop: false }`
[INFO] [stdout] a098c42cccdf63a57b25b176dbe0240d3097d4ace5ffe8637d947ccb56cc2279
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88b4f8b17647587f2ca9df33b764e329d1683ae1862f2b218d51a1ece02a7cbe
[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" "88b4f8b17647587f2ca9df33b764e329d1683ae1862f2b218d51a1ece02a7cbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking c_str_macro v1.0.2
[INFO] [stderr]     Checking semver-parser v0.9.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling reaper-low v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking vst v0.2.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]     Checking version-sync v0.9.1
[INFO] [stderr]    Compiling num_enum_derive v0.4.3
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling enumflags2_derive v0.6.4
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]     Checking enumflags2 v0.6.4
[INFO] [stderr]     Checking num_enum v0.4.3
[INFO] [stderr]     Checking helgoboss-midi v0.1.0
[INFO] [stderr]     Checking reaper-medium v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 24s
[INFO] running `Command { std: "docker" "inspect" "88b4f8b17647587f2ca9df33b764e329d1683ae1862f2b218d51a1ece02a7cbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88b4f8b17647587f2ca9df33b764e329d1683ae1862f2b218d51a1ece02a7cbe", kill_on_drop: false }`
[INFO] [stdout] 88b4f8b17647587f2ca9df33b764e329d1683ae1862f2b218d51a1ece02a7cbe