[INFO] fetching crate mepple 0.2.0...
[INFO] testing mepple-0.2.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate mepple 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mepple 0.2.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mepple 0.2.0
[INFO] finished tweaking crates.io crate mepple 0.2.0
[INFO] tweaked toml for crates.io crate mepple 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] 7df91f2c2ca0b59e01aeb1a88fc1d25465808aa0fa002243f16385a22e1c91a1
[INFO] running `Command { std: "docker" "start" "-a" "7df91f2c2ca0b59e01aeb1a88fc1d25465808aa0fa002243f16385a22e1c91a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7df91f2c2ca0b59e01aeb1a88fc1d25465808aa0fa002243f16385a22e1c91a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7df91f2c2ca0b59e01aeb1a88fc1d25465808aa0fa002243f16385a22e1c91a1", kill_on_drop: false }`
[INFO] [stdout] 7df91f2c2ca0b59e01aeb1a88fc1d25465808aa0fa002243f16385a22e1c91a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b5b00cc583b156c0e8ddb88a7e8186e4e4297c93af5c10b4345b7cd1f2f5233
[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" "4b5b00cc583b156c0e8ddb88a7e8186e4e4297c93af5c10b4345b7cd1f2f5233", kill_on_drop: false }`
[INFO] [stderr]    Compiling mepple v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `mepple`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name mepple --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=f837ae055737f0a2 -C extra-filename=-f837ae055737f0a2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b33cd6b8ee13db74.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "4b5b00cc583b156c0e8ddb88a7e8186e4e4297c93af5c10b4345b7cd1f2f5233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b5b00cc583b156c0e8ddb88a7e8186e4e4297c93af5c10b4345b7cd1f2f5233", kill_on_drop: false }`
[INFO] [stdout] 4b5b00cc583b156c0e8ddb88a7e8186e4e4297c93af5c10b4345b7cd1f2f5233