[INFO] updating cached repository Globidev/push-swap
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Globidev/push-swap
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Globidev/push-swap" "work/ex/beta-1.38-1/sources/1.37.0/gh/Globidev/push-swap"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Globidev/push-swap'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Globidev/push-swap" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Globidev/push-swap"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Globidev/push-swap'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d3c6f1c7ab6b33d7281eff4895b3d0e4c291fe77
[INFO] sha for GitHub repo Globidev/push-swap: d3c6f1c7ab6b33d7281eff4895b3d0e4c291fe77
[INFO] validating manifest of Globidev/push-swap 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 Globidev/push-swap 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 Globidev/push-swap
[INFO] finished frobbing Globidev/push-swap
[INFO] frobbed toml for Globidev/push-swap written to work/ex/beta-1.38-1/sources/1.37.0/gh/Globidev/push-swap/Cargo.toml
[INFO] started frobbing Globidev/push-swap
[INFO] finished frobbing Globidev/push-swap
[INFO] frobbed toml for Globidev/push-swap written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Globidev/push-swap/Cargo.toml
[INFO] crate Globidev/push-swap 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing Globidev/push-swap against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Globidev/push-swap:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] a35de214a548c7dfe646b508ac1187549aa12c3463e40914ee9625622cecc46d
[INFO] running `"docker" "start" "-a" "a35de214a548c7dfe646b508ac1187549aa12c3463e40914ee9625622cecc46d"`
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling smallvec v0.6.4
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling quote v0.6.5
[INFO] [stderr]    Compiling syn v0.14.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling colored v1.6.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling crossbeam-deque v0.6.1
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]    Compiling structopt v0.2.10
[INFO] [stderr]    Compiling push-swap v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(generators, generator_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(iterator_find_map)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `min` is imported redundantly
[INFO] [stderr]   --> src/solver/smart_insert.rs:36:40
[INFO] [stderr]    |
[INFO] [stderr] 36 |                         use std::cmp::{min, Ordering::Equal};
[INFO] [stderr]    |                                        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |             use std::cmp::min;
[INFO] [stderr]    |                 ------------- the item `min` is already imported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `resume` found for type `G` in the current scope
[INFO] [stderr]   --> src/utils.rs:41:31
[INFO] [stderr]    |
[INFO] [stderr] 41 |         match unsafe { self.0.resume() } {
[INFO] [stderr]    |                               ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the type parameter is bounded by the trait
[INFO] [stderr] help: the following trait defines an item `resume`, perhaps you need to restrict type parameter `G` with it:
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl<T, G: std::ops::Generator> Iterator for IterGen<G>
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `push-swap`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a35de214a548c7dfe646b508ac1187549aa12c3463e40914ee9625622cecc46d"`
[INFO] running `"docker" "rm" "-f" "a35de214a548c7dfe646b508ac1187549aa12c3463e40914ee9625622cecc46d"`
[INFO] [stdout] a35de214a548c7dfe646b508ac1187549aa12c3463e40914ee9625622cecc46d