[INFO] updating cached repository pinkisemils/markybot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pinkisemils/markybot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pinkisemils/markybot" "work/ex/beta-1.38-1/sources/1.37.0/gh/pinkisemils/markybot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pinkisemils/markybot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pinkisemils/markybot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pinkisemils/markybot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pinkisemils/markybot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 42c9d3c344ded084957bb8af73d8d3fa067a37ef
[INFO] sha for GitHub repo pinkisemils/markybot: 42c9d3c344ded084957bb8af73d8d3fa067a37ef
[INFO] validating manifest of pinkisemils/markybot on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pinkisemils/markybot on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pinkisemils/markybot
[INFO] finished frobbing pinkisemils/markybot
[INFO] frobbed toml for pinkisemils/markybot written to work/ex/beta-1.38-1/sources/1.37.0/gh/pinkisemils/markybot/Cargo.toml
[INFO] started frobbing pinkisemils/markybot
[INFO] finished frobbing pinkisemils/markybot
[INFO] frobbed toml for pinkisemils/markybot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pinkisemils/markybot/Cargo.toml
[INFO] crate pinkisemils/markybot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing pinkisemils/markybot against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pinkisemils/markybot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 241bb649d45e4a6112987bed860703551e92cbb4c7cd15ccb586670e19092f83
[INFO] running `"docker" "start" "-a" "241bb649d45e4a6112987bed860703551e92cbb4c7cd15ccb586670e19092f83"`
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling edit-distance v1.0.0
[INFO] [stderr]    Compiling openssl-sys v0.9.14
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling net2 v0.2.29
[INFO] [stderr]    Compiling num_cpus v1.5.1
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]    Compiling itertools v0.6.0
[INFO] [stderr]    Compiling markov v0.0.33
[INFO] [stderr]    Compiling lazysort v0.1.1
[INFO] [stderr]    Compiling nom v3.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]    Compiling bytes v0.4.4
[INFO] [stderr]    Compiling backtrace v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling futures-cpupool v0.1.5
[INFO] [stderr]    Compiling mio v0.6.9
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling openssl v0.9.14
[INFO] [stderr]    Compiling tokio-io v0.1.2
[INFO] [stderr]    Compiling pircolate v0.2.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling tokio-core v0.1.8
[INFO] [stderr]    Compiling tokio-pool v0.1.0
[INFO] [stderr]    Compiling tokio-irc-client v0.2.1
[INFO] [stderr]    Compiling native-tls v0.1.2
[INFO] [stderr]    Compiling tokio-tls v0.1.2
[INFO] [stderr]    Compiling MarkyBot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(str_checked_slicing)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | #[macro_use] extern crate lazy_static;
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | #[macro_use] extern crate itertools;
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rayon::prelude`
[INFO] [stderr]   --> src/marky.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use rayon::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `MarkyBot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "241bb649d45e4a6112987bed860703551e92cbb4c7cd15ccb586670e19092f83"`
[INFO] running `"docker" "rm" "-f" "241bb649d45e4a6112987bed860703551e92cbb4c7cd15ccb586670e19092f83"`
[INFO] [stdout] 241bb649d45e4a6112987bed860703551e92cbb4c7cd15ccb586670e19092f83