[INFO] fetching crate rangeinfo 0.1.1...
[INFO] testing rangeinfo-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rangeinfo 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rangeinfo 0.1.1 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 rangeinfo 0.1.1
[INFO] finished tweaking crates.io crate rangeinfo 0.1.1
[INFO] tweaked toml for crates.io crate rangeinfo 0.1.1 written to /workspace/builds/worker-5/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10d575b25f6df71905b09afd0a540f1cec894fdc58143c9320fbaf05b5cecd5d
[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" "10d575b25f6df71905b09afd0a540f1cec894fdc58143c9320fbaf05b5cecd5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10d575b25f6df71905b09afd0a540f1cec894fdc58143c9320fbaf05b5cecd5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10d575b25f6df71905b09afd0a540f1cec894fdc58143c9320fbaf05b5cecd5d", kill_on_drop: false }`
[INFO] [stdout] 10d575b25f6df71905b09afd0a540f1cec894fdc58143c9320fbaf05b5cecd5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c2c644bf5d1eaa7c5e57a20f1d4d356445b826a8561a48549e151c96c5f1b54
[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" "7c2c644bf5d1eaa7c5e57a20f1d4d356445b826a8561a48549e151c96c5f1b54", kill_on_drop: false }`
[INFO] [stderr]    Compiling rangeinfo v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(inclusive_range,inclusive_range_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0616]: field `start` of struct `RangeInclusive` is private
[INFO] [stdout]   --> src/lib.rs:53:31
[INFO] [stdout]    |
[INFO] [stdout] 53 |             start:Closed(self.start.clone()),
[INFO] [stdout]    |                               ^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `start` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 53 |             start:Closed(self.start().clone()),
[INFO] [stdout]    |                                    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0616]: field `end` of struct `RangeInclusive` is private
[INFO] [stdout]   --> src/lib.rs:54:29
[INFO] [stdout]    |
[INFO] [stdout] 54 |             end:Closed(self.end.clone()),
[INFO] [stdout]    |                             ^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `end` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 |             end:Closed(self.end().clone()),
[INFO] [stdout]    |                                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0616.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rangeinfo`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7c2c644bf5d1eaa7c5e57a20f1d4d356445b826a8561a48549e151c96c5f1b54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c2c644bf5d1eaa7c5e57a20f1d4d356445b826a8561a48549e151c96c5f1b54", kill_on_drop: false }`
[INFO] [stdout] 7c2c644bf5d1eaa7c5e57a20f1d4d356445b826a8561a48549e151c96c5f1b54