[INFO] updating cached repository emallson/tiptop
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/emallson/tiptop
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/emallson/tiptop" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/emallson/tiptop"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/emallson/tiptop'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/emallson/tiptop" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/emallson/tiptop"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/emallson/tiptop'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b7f7677b96f1a1ec19889d1e1000b8aab047d265
[INFO] sha for GitHub repo emallson/tiptop: b7f7677b96f1a1ec19889d1e1000b8aab047d265
[INFO] validating manifest of emallson/tiptop on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of emallson/tiptop on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing emallson/tiptop
[INFO] finished frobbing emallson/tiptop
[INFO] frobbed toml for emallson/tiptop written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/emallson/tiptop/Cargo.toml
[INFO] started frobbing emallson/tiptop
[INFO] finished frobbing emallson/tiptop
[INFO] frobbed toml for emallson/tiptop written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/emallson/tiptop/Cargo.toml
[INFO] crate emallson/tiptop already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking emallson/tiptop against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/emallson/tiptop:/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=forbid" "-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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e013ea5492551186961b7cabc5c96bf948131b001237af9bbce0412c4c22b691
[INFO] running `"docker" "start" "-a" "e013ea5492551186961b7cabc5c96bf948131b001237af9bbce0412c4c22b691"`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]    Compiling byteorder v0.4.2
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]     Checking slog v1.7.1
[INFO] [stderr]     Checking ordermap v0.2.12
[INFO] [stderr]     Checking fixedbitset v0.1.8
[INFO] [stderr]     Checking futures v0.1.16
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking strsim v0.5.2
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking fnv v1.0.5
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]     Checking as_num v0.2.3
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking serde v1.0.15
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking colored v1.5.2
[INFO] [stderr]    Compiling capnp v0.7.5
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr] warning[E0502]: cannot borrow `*reff` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/capnp-0.7.5/src/private/layout.rs:643:47
[INFO] [stderr]     |
[INFO] [stderr] 643 |         let ptr = try!(follow_fars(&mut reff, (*reff).target(), &mut segment));
[INFO] [stderr]     |                        ----------- ---------  ^^^^^^^ immutable borrow occurs here
[INFO] [stderr]     |                        |           |
[INFO] [stderr]     |                        |           mutable borrow occurs here
[INFO] [stderr]     |                        mutable borrow later used by call
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking isatty v0.1.3
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr] warning[E0502]: cannot borrow `*reff` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/capnp-0.7.5/src/private/layout.rs:643:47
[INFO] [stderr]     |
[INFO] [stderr] 643 |         let ptr = try!(follow_fars(&mut reff, (*reff).target(), &mut segment));
[INFO] [stderr]     |                        ----------- ---------  ^^^^^^^ immutable borrow occurs here
[INFO] [stderr]     |                        |           |
[INFO] [stderr]     |                        |           mutable borrow occurs here
[INFO] [stderr]     |                        mutable borrow later used by call
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling capnpc v0.7.5
[INFO] [stderr]    Compiling gurobi v0.1.1 (https://github.com/emallson/gurobi.rs.git#e275cfae)
[INFO] [stderr]     Checking rand-mersenne-twister v0.2.0 (https://github.com/emallson/rust-mersenne-twister.git#2e01e0ee)
[INFO] [stderr]     Checking statrs v0.8.0
[INFO] [stderr]     Checking slog-serde v1.0.0-alpha9
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking slog-extra v0.1.2
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking slog-stream v1.2.1
[INFO] [stderr]     Checking serde_json v1.0.3
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking slog-json v1.2.1
[INFO] [stderr]     Checking slog-term v1.5.0
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stderr]     Checking quickcheck v0.4.1
[INFO] [stderr]     Checking petgraph v0.4.7
[INFO] [stderr]     Checking vec-graph v0.1.0 (https://github.com/emallson/vec-graph.git#965dc3b9)
[INFO] [stderr]     Checking ris v0.1.0 (https://github.com/emallson/ris.rs.git#95d094fa)
[INFO] [stderr]    Compiling serde_derive v1.0.15
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]    Compiling capngraph v0.3.0 (https://github.com/emallson/capngraph.git#997b39ef)
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]     Checking tiptop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `EdgeIndex`
[INFO] [stderr]   --> src/main.rs:35:35
[INFO] [stderr]    |
[INFO] [stderr] 35 | use vec_graph::{Graph, NodeIndex, EdgeIndex};
[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:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `EdgeIndex`
[INFO] [stderr]   --> src/main.rs:35:35
[INFO] [stderr]    |
[INFO] [stderr] 35 | use vec_graph::{Graph, NodeIndex, EdgeIndex};
[INFO] [stderr]    |                                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:132:10
[INFO] [stderr]     |
[INFO] [stderr] 132 |     for (i, set) in rr_sets.iter().enumerate() {
[INFO] [stderr]     |          ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:132:10
[INFO] [stderr]     |
[INFO] [stderr] 132 |     for (i, set) in rr_sets.iter().enumerate() {
[INFO] [stderr]     |          ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 4m 42s
[INFO] running `"docker" "inspect" "e013ea5492551186961b7cabc5c96bf948131b001237af9bbce0412c4c22b691"`
[INFO] running `"docker" "rm" "-f" "e013ea5492551186961b7cabc5c96bf948131b001237af9bbce0412c4c22b691"`
[INFO] [stdout] e013ea5492551186961b7cabc5c96bf948131b001237af9bbce0412c4c22b691