[INFO] fetching crate x11nas 2.19.0...
[INFO] checking x11nas-2.19.0 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate x11nas 2.19.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate x11nas 2.19.0 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 x11nas 2.19.0
[INFO] finished tweaking crates.io crate x11nas 2.19.0
[INFO] tweaked toml for crates.io crate x11nas 2.19.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate x11nas 2.19.0 already has a lockfile, it will not be regenerated
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 01aee36442c6a703e4bb7fcdd088108f8c012ac8c3e1d20e22ba5f18732f2219
[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" "01aee36442c6a703e4bb7fcdd088108f8c012ac8c3e1d20e22ba5f18732f2219", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01aee36442c6a703e4bb7fcdd088108f8c012ac8c3e1d20e22ba5f18732f2219", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01aee36442c6a703e4bb7fcdd088108f8c012ac8c3e1d20e22ba5f18732f2219", kill_on_drop: false }`
[INFO] [stdout] 01aee36442c6a703e4bb7fcdd088108f8c012ac8c3e1d20e22ba5f18732f2219
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d4d8e4ae24f009e5c69718b041ad937f2cd80a487adedac01fc9ff02d2d4debb
[INFO] running `Command { std: "docker" "start" "-a" "d4d8e4ae24f009e5c69718b041ad937f2cd80a487adedac01fc9ff02d2d4debb", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling x11nas v2.19.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `x11`
[INFO] [stdout]  --> examples/xrecord.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate x11;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `x11`
[INFO] [stdout]  --> examples/hello-world.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate x11;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `x11nas`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0463]: can't find crate for `x11`
[INFO] [stdout]   --> examples/input.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate x11;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d4d8e4ae24f009e5c69718b041ad937f2cd80a487adedac01fc9ff02d2d4debb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4d8e4ae24f009e5c69718b041ad937f2cd80a487adedac01fc9ff02d2d4debb", kill_on_drop: false }`
[INFO] [stdout] d4d8e4ae24f009e5c69718b041ad937f2cd80a487adedac01fc9ff02d2d4debb