[INFO] updating cached repository sunng87/cargo-release
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sunng87/cargo-release
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sunng87/cargo-release" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/sunng87/cargo-release"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/sunng87/cargo-release'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sunng87/cargo-release" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/sunng87/cargo-release"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/sunng87/cargo-release'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c29e4ab407114fd0780029e0036178ee43c9e2bd
[INFO] sha for GitHub repo sunng87/cargo-release: c29e4ab407114fd0780029e0036178ee43c9e2bd
[INFO] validating manifest of sunng87/cargo-release on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sunng87/cargo-release on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sunng87/cargo-release
[INFO] finished frobbing sunng87/cargo-release
[INFO] frobbed toml for sunng87/cargo-release written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/sunng87/cargo-release/Cargo.toml
[INFO] started frobbing sunng87/cargo-release
[INFO] finished frobbing sunng87/cargo-release
[INFO] frobbed toml for sunng87/cargo-release written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/sunng87/cargo-release/Cargo.toml
[INFO] crate sunng87/cargo-release already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking sunng87/cargo-release against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-6/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/sunng87/cargo-release:/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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d96348bf5d286ef924b2b29cd105ad7f12a908542af83734ed40eb36ba8dde4c
[INFO] running `"docker" "start" "-a" "d96348bf5d286ef924b2b29cd105ad7f12a908542af83734ed40eb36ba8dde4c"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking ascii v0.9.1
[INFO] [stderr]     Checking doc-comment v0.2.4
[INFO] [stderr]     Checking maplit v0.1.6
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]     Checking semver-parser v0.9.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling serde_derive v1.0.87
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking regex v1.1.2
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking combine v3.6.7
[INFO] [stderr]     Checking globset v0.4.2
[INFO] [stderr]     Checking predicates v1.0.0
[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stderr]     Checking ignore v0.4.6
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking globwalk v0.5.0
[INFO] [stderr]     Checking assert_fs v0.11.3
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking toml_edit v0.1.3
[INFO] [stderr]     Checking cargo_metadata v0.7.1
[INFO] [stderr]     Checking clap-cargo v0.1.4
[INFO] [stderr] warning[E0502]: cannot borrow `v` as immutable because it is also borrowed as mutable
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/toml_edit-0.1.3/src/index.rs:55:65
[INFO] [stderr]    |
[INFO] [stderr] 44 |       fn index_or_insert<'v>(&self, v: &'v mut Item) -> &'v mut Item {
[INFO] [stderr]    |                          -- lifetime `'v` defined here
[INFO] [stderr] 45 | /         match *v {
[INFO] [stderr] 46 | |             Item::ArrayOfTables(ref mut vec) => {
[INFO] [stderr] 47 | |                 vec.values.get_mut(*self).expect("index out of bounds")
[INFO] [stderr] 48 | |             }
[INFO] [stderr] 49 | |             Item::Value(ref mut a) if a.is_array() => a
[INFO] [stderr]    | |                         --------- mutable borrow occurs here
[INFO] [stderr] ...  |
[INFO] [stderr] 55 | |             _ => panic!("cannot access index {} in {:?}", self, v),
[INFO] [stderr]    | |                                                                 ^ immutable borrow occurs here
[INFO] [stderr] 56 | |         }
[INFO] [stderr]    | |_________- returning this value requires that `v.0` is borrowed for `'v`
[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] warning[E0502]: cannot borrow `v` as immutable because it is also borrowed as mutable
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/toml_edit-0.1.3/src/index.rs:88:63
[INFO] [stderr]    |
[INFO] [stderr] 70 |       fn index_or_insert<'v>(&self, v: &'v mut Item) -> &'v mut Item {
[INFO] [stderr]    |                          -- lifetime `'v` defined here
[INFO] [stderr] ...
[INFO] [stderr] 77 | /         match *v {
[INFO] [stderr] 78 | |             Item::Table(ref mut t) => t.entry(self).or_insert(Item::None),
[INFO] [stderr] 79 | |             Item::Value(ref mut v) if v.is_inline_table() => {
[INFO] [stderr]    | |                         --------- mutable borrow occurs here
[INFO] [stderr] 80 | |                 &mut v
[INFO] [stderr] ...  |
[INFO] [stderr] 88 | |             _ => panic!("cannot access key {} in {:?}", self, v),
[INFO] [stderr]    | |                                                               ^ immutable borrow occurs here
[INFO] [stderr] 89 | |         }
[INFO] [stderr]    | |_________- returning this value requires that `v.0` is borrowed for `'v`
[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 cargo-release v0.12.0-beta.6 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:114:39
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn update(&mut self, source: &ConfigSource) {
[INFO] [stderr]     |                                       ^^^^^^^^^^^^ help: use `dyn`: `dyn ConfigSource`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:114:39
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn update(&mut self, source: &ConfigSource) {
[INFO] [stderr]     |                                       ^^^^^^^^^^^^ help: use `dyn`: `dyn ConfigSource`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `"docker" "inspect" "d96348bf5d286ef924b2b29cd105ad7f12a908542af83734ed40eb36ba8dde4c"`
[INFO] running `"docker" "rm" "-f" "d96348bf5d286ef924b2b29cd105ad7f12a908542af83734ed40eb36ba8dde4c"`
[INFO] [stdout] d96348bf5d286ef924b2b29cd105ad7f12a908542af83734ed40eb36ba8dde4c