[INFO] fetching crate parsell 0.6.5...
[INFO] testing parsell-0.6.5 against 1.49.0 for beta-1.50-1
[INFO] extracting crate parsell 0.6.5 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate parsell 0.6.5 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 parsell 0.6.5
[INFO] finished tweaking crates.io crate parsell 0.6.5
[INFO] tweaked toml for crates.io crate parsell 0.6.5 written to /workspace/builds/worker-13/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-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d8de7c09f700c2d03ae6eeefbf0174b603c8f5ba0b7d7251e65ccfe937ef3f0
[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" "4d8de7c09f700c2d03ae6eeefbf0174b603c8f5ba0b7d7251e65ccfe937ef3f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d8de7c09f700c2d03ae6eeefbf0174b603c8f5ba0b7d7251e65ccfe937ef3f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d8de7c09f700c2d03ae6eeefbf0174b603c8f5ba0b7d7251e65ccfe937ef3f0", kill_on_drop: false }`
[INFO] [stdout] 4d8de7c09f700c2d03ae6eeefbf0174b603c8f5ba0b7d7251e65ccfe937ef3f0
[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=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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 584564b45cf818c5f433c2656ae71c05d7f801ff5ce30474995dcc2cbb523986
[INFO] running `Command { std: "docker" "start" "-a" "584564b45cf818c5f433c2656ae71c05d7f801ff5ce30474995dcc2cbb523986", kill_on_drop: false }`
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling pulldown-cmark v0.0.3
[INFO] [stderr]    Compiling skeptic v0.4.0
[INFO] [stderr]    Compiling parsell v0.6.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(unboxed_closures)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:135:25
[INFO] [stdout]     |
[INFO] [stdout] 135 |         Ok(self.0.apply(try!(args)))
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:142:25
[INFO] [stdout]     |
[INFO] [stdout] 142 |         Ok(self.0.apply(try!(args)))
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         try!(arg); Ok(())
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:165:13
[INFO] [stdout]     |
[INFO] [stdout] 165 |         Ok((try!(args.0), args.1))
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:174:21
[INFO] [stdout]     |
[INFO] [stdout] 174 |         Ok((args.0, try!(args.1)))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |         Ok((try!(args.0), try!(args.1)))
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:183:27
[INFO] [stdout]     |
[INFO] [stdout] 183 |         Ok((try!(args.0), try!(args.1)))
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:189:13
[INFO] [stdout]     |
[INFO] [stdout] 189 |         Ok((try!(args.0), try!(args.1)))
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/impls.rs:189:27
[INFO] [stdout]     |
[INFO] [stdout] 189 |         Ok((try!(args.0), try!(args.1)))
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `parsell`
[INFO] [stdout] error: aborting due to previous error; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "584564b45cf818c5f433c2656ae71c05d7f801ff5ce30474995dcc2cbb523986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "584564b45cf818c5f433c2656ae71c05d7f801ff5ce30474995dcc2cbb523986", kill_on_drop: false }`
[INFO] [stdout] 584564b45cf818c5f433c2656ae71c05d7f801ff5ce30474995dcc2cbb523986