[INFO] fetching crate linkle 0.2.10...
[INFO] checking linkle-0.2.10 against beta for pr-78714
[INFO] extracting crate linkle 0.2.10 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate linkle 0.2.10 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 linkle 0.2.10
[INFO] finished tweaking crates.io crate linkle 0.2.10
[INFO] tweaked toml for crates.io crate linkle 0.2.10 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate linkle 0.2.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] db84fcd8e29e2cb0ea7c22495565a59e2f92bca4c0a700e2b77c7df80a51521d
[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" "db84fcd8e29e2cb0ea7c22495565a59e2f92bca4c0a700e2b77c7df80a51521d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db84fcd8e29e2cb0ea7c22495565a59e2f92bca4c0a700e2b77c7df80a51521d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db84fcd8e29e2cb0ea7c22495565a59e2f92bca4c0a700e2b77c7df80a51521d", kill_on_drop: false }`
[INFO] [stdout] db84fcd8e29e2cb0ea7c22495565a59e2f92bca4c0a700e2b77c7df80a51521d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] a66dcbec5c0c07ade5fe8e8be3091c217ba26fe9107b32d9fc6150f5b9458ad5
[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" "a66dcbec5c0c07ade5fe8e8be3091c217ba26fe9107b32d9fc6150f5b9458ad5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling bytecount v0.3.2
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking byte-tools v0.3.0
[INFO] [stderr]     Checking arrayref v0.3.4
[INFO] [stderr]     Checking opaque-debug v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling lz4-sys v1.8.3
[INFO] [stderr]     Checking elf v0.0.10
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]     Checking generic-array v0.12.0
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]     Checking dirs v1.0.4
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking block-padding v0.1.2
[INFO] [stderr]     Checking blz-nx v1.0.1
[INFO] [stderr]     Checking digest v0.7.5
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking block-cipher-trait v0.6.2
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking dbl v0.2.0
[INFO] [stderr]     Checking aes-soft v0.3.2
[INFO] [stderr]     Checking block-modes v0.2.0
[INFO] [stderr]     Checking cmac v0.2.0
[INFO] [stderr]     Checking aes v0.3.2
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling derive_more v0.13.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]    Compiling cargo_metadata v0.5.8
[INFO] [stderr]    Compiling skeptic v0.13.3
[INFO] [stderr]    Compiling lz4 v1.23.1
[INFO] [stderr]     Checking linkle v0.2.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.41s
[INFO] running `Command { std: "docker" "inspect" "a66dcbec5c0c07ade5fe8e8be3091c217ba26fe9107b32d9fc6150f5b9458ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a66dcbec5c0c07ade5fe8e8be3091c217ba26fe9107b32d9fc6150f5b9458ad5", kill_on_drop: false }`
[INFO] [stdout] a66dcbec5c0c07ade5fe8e8be3091c217ba26fe9107b32d9fc6150f5b9458ad5