[INFO] cloning repository https://github.com/mraof/morbitgen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mraof/morbitgen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmraof%2Fmorbitgen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmraof%2Fmorbitgen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d9e537a20ac2ebb0e36156ddacae3cf791a9db8
[INFO] testing mraof/morbitgen against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmraof%2Fmorbitgen" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mraof/morbitgen 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] removed /workspace/builds/worker-14/source/.cargo/config
[INFO] started tweaking git repo https://github.com/mraof/morbitgen
[INFO] finished tweaking git repo https://github.com/mraof/morbitgen
[INFO] tweaked toml for git repo https://github.com/mraof/morbitgen written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/mraof/morbitgen already has a lockfile, it will not be regenerated
[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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 61b14d0f0d2b351c07e57da21efb3fa9175794e4f4e6b01969974617849a466b
[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" "61b14d0f0d2b351c07e57da21efb3fa9175794e4f4e6b01969974617849a466b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61b14d0f0d2b351c07e57da21efb3fa9175794e4f4e6b01969974617849a466b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61b14d0f0d2b351c07e57da21efb3fa9175794e4f4e6b01969974617849a466b", kill_on_drop: false }`
[INFO] [stdout] 61b14d0f0d2b351c07e57da21efb3fa9175794e4f4e6b01969974617849a466b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] bf60ce672fbcb21c395409aa9a6b5457064c6516dbf312223b9eb9ba4456b56c
[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" "bf60ce672fbcb21c395409aa9a6b5457064c6516dbf312223b9eb9ba4456b56c", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.3
[INFO] [stderr]    Compiling base-x v0.2.3
[INFO] [stderr]    Compiling discard v1.0.4
[INFO] [stderr]    Compiling stdweb v0.4.12
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.4
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]    Compiling yew v0.4.0
[INFO] [stderr]    Compiling morbitgen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated struct `rand::distributions::WeightedChoice`: use WeightedIndex instead
[INFO] [stdout]   --> src/lib.rs:22:27
[INFO] [stdout]    |
[INFO] [stdout] 22 | use rand::distributions::{WeightedChoice, Weighted, Distribution};
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `rand::distributions::Weighted`: use WeightedIndex instead
[INFO] [stdout]   --> src/lib.rs:22:43
[INFO] [stdout]    |
[INFO] [stdout] 22 | use rand::distributions::{WeightedChoice, Weighted, Distribution};
[INFO] [stdout]    |                                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `rand::distributions::Weighted`: use WeightedIndex instead
[INFO] [stdout]    --> src/lib.rs:371:29
[INFO] [stdout]     |
[INFO] [stdout] 371 | ...                   Weighted {
[INFO] [stdout]     |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `rand::distributions::WeightedChoice`: use WeightedIndex instead
[INFO] [stdout]    --> src/lib.rs:377:30
[INFO] [stdout]     |
[INFO] [stdout] 377 |                     let wc = WeightedChoice::new(&mut vec);
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `rand::distributions::Weighted::weight`: use WeightedIndex instead
[INFO] [stdout]    --> src/lib.rs:372:33
[INFO] [stdout]     |
[INFO] [stdout] 372 | ...                   weight: chance.chance(),
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `rand::distributions::Weighted::item`: use WeightedIndex instead
[INFO] [stdout]    --> src/lib.rs:373:33
[INFO] [stdout]     |
[INFO] [stdout] 373 | ...                   item: *chance,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::distributions::WeightedChoice::<'a, T>::new`: use WeightedIndex instead
[INFO] [stdout]    --> src/lib.rs:377:30
[INFO] [stdout]     |
[INFO] [stdout] 377 |                     let wc = WeightedChoice::new(&mut vec);
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview, uniform_paths)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `morbitgen`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "bf60ce672fbcb21c395409aa9a6b5457064c6516dbf312223b9eb9ba4456b56c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf60ce672fbcb21c395409aa9a6b5457064c6516dbf312223b9eb9ba4456b56c", kill_on_drop: false }`
[INFO] [stdout] bf60ce672fbcb21c395409aa9a6b5457064c6516dbf312223b9eb9ba4456b56c