[INFO] fetching crate reaper-medium 0.1.0...
[INFO] checking reaper-medium-0.1.0 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate reaper-medium 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate reaper-medium 0.1.0 on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "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" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "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] f28da6d4679aad55c66f05f1e9c9520927bea3d363d8cd4f8efa9e10dec8bda2
[INFO] running `Command { std: "docker" "start" "-a" "f28da6d4679aad55c66f05f1e9c9520927bea3d363d8cd4f8efa9e10dec8bda2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f28da6d4679aad55c66f05f1e9c9520927bea3d363d8cd4f8efa9e10dec8bda2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f28da6d4679aad55c66f05f1e9c9520927bea3d363d8cd4f8efa9e10dec8bda2", kill_on_drop: false }`
[INFO] [stdout] f28da6d4679aad55c66f05f1e9c9520927bea3d363d8cd4f8efa9e10dec8bda2
[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" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd530dee75d75a0dbcaeeb26404332b3ed7a0212f986287d9f9c213f2f06da70
[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" "bd530dee75d75a0dbcaeeb26404332b3ed7a0212f986287d9f9c213f2f06da70", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking c_str_macro v1.0.2
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling reaper-low v0.1.0
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking num-traits v0.2.12
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking pulldown-cmark v0.7.2
[INFO] [stderr]     Checking vst v0.2.0
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking syn v1.0.40
[INFO] [stderr]     Checking version-sync v0.9.1
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[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 v0.99.9
[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 00s
[INFO] running `Command { std: "docker" "inspect" "bd530dee75d75a0dbcaeeb26404332b3ed7a0212f986287d9f9c213f2f06da70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd530dee75d75a0dbcaeeb26404332b3ed7a0212f986287d9f9c213f2f06da70", kill_on_drop: false }`
[INFO] [stdout] bd530dee75d75a0dbcaeeb26404332b3ed7a0212f986287d9f9c213f2f06da70