[INFO] fetching crate dntk 2.2.1...
[INFO] testing dntk-2.2.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate dntk 2.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate dntk 2.2.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dntk 2.2.1
[INFO] finished tweaking crates.io crate dntk 2.2.1
[INFO] tweaked toml for crates.io crate dntk 2.2.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7625547985d8f3359e07ca43fca7b8f97e16f5c7a10bd854ae332a50ff4d7f49
[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" "7625547985d8f3359e07ca43fca7b8f97e16f5c7a10bd854ae332a50ff4d7f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7625547985d8f3359e07ca43fca7b8f97e16f5c7a10bd854ae332a50ff4d7f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7625547985d8f3359e07ca43fca7b8f97e16f5c7a10bd854ae332a50ff4d7f49", kill_on_drop: false }`
[INFO] [stdout] 7625547985d8f3359e07ca43fca7b8f97e16f5c7a10bd854ae332a50ff4d7f49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c2b3a3145546e227ebf8a9021c1cae1fd49bf0c17043c2ee6ea7a73c951c821
[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" "5c2b3a3145546e227ebf8a9021c1cae1fd49bf0c17043c2ee6ea7a73c951c821", kill_on_drop: false }`
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling predicates-core v1.0.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rgb v0.8.25
[INFO] [stderr]    Compiling subprocess v0.1.20
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling predicates v1.0.6
[INFO] [stderr]    Compiling predicates-tree v1.0.1
[INFO] [stderr]    Compiling assert_cmd v0.11.1
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling dntk v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: environment variable `LINUX_TERM_LIB` not defined
[INFO] [stdout]  --> src/term/mod.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | include!(env!("LINUX_TERM_LIB"));
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dntk`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5c2b3a3145546e227ebf8a9021c1cae1fd49bf0c17043c2ee6ea7a73c951c821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c2b3a3145546e227ebf8a9021c1cae1fd49bf0c17043c2ee6ea7a73c951c821", kill_on_drop: false }`
[INFO] [stdout] 5c2b3a3145546e227ebf8a9021c1cae1fd49bf0c17043c2ee6ea7a73c951c821