[INFO] updating cached repository Menkir/resa
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Menkir/resa
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Menkir/resa" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/Menkir/resa"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/Menkir/resa'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Menkir/resa" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/Menkir/resa"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/Menkir/resa'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8371423fe0e2301e15f134c91079a2c0b12e950b
[INFO] sha for GitHub repo Menkir/resa: 8371423fe0e2301e15f134c91079a2c0b12e950b
[INFO] validating manifest of Menkir/resa 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 Menkir/resa 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 Menkir/resa
[INFO] finished frobbing Menkir/resa
[INFO] frobbed toml for Menkir/resa written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/Menkir/resa/Cargo.toml
[INFO] started frobbing Menkir/resa
[INFO] finished frobbing Menkir/resa
[INFO] frobbed toml for Menkir/resa written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/Menkir/resa/Cargo.toml
[INFO] crate Menkir/resa 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 Menkir/resa 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/Menkir/resa:/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] ecb0ec1c8937324f84be87d22dbc5ff10d52def119eedd98cf3c4f84ff281197
[INFO] running `"docker" "start" "-a" "ecb0ec1c8937324f84be87d22dbc5ff10d52def119eedd98cf3c4f84ff281197"`
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]     Checking serde v1.0.55
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking regex-syntax v0.6.1
[INFO] [stderr]     Checking colored v1.6.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking aho-corasick v0.6.5
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking encoding_rs v0.7.2
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]     Checking bytes v0.4.7
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking clap v2.27.1
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling phf_shared v0.7.22
[INFO] [stderr]     Checking mime v0.3.7
[INFO] [stderr]     Checking libflate v0.1.14
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking tokio-executor v0.1.2
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking relay v0.1.1
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]     Checking phf v0.7.22
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.7.0/src/form_urlencoded.rs:261:40
[INFO] [stderr]     |
[INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[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 tokio-threadpool v0.1.3
[INFO] [stderr]     Checking tokio-timer v0.2.3
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.4
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]     Checking extractor v0.1.0
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking tokio-tls v0.1.4
[INFO] [stderr]     Checking hyper v0.11.26
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking serde_urlencoded v0.5.1
[INFO] [stderr]     Checking hyper-tls v0.1.3
[INFO] [stderr]     Checking reqwest v0.8.5
[INFO] [stderr]     Checking resa v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut temp = StackOverflow::search(&q);
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin.rs:85:13
[INFO] [stderr]    |
[INFO] [stderr] 85 |         for mut s in so.clone().into_iter() {
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut temp = StackOverflow::search(&q);
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin.rs:85:13
[INFO] [stderr]    |
[INFO] [stderr] 85 |         for mut s in so.clone().into_iter() {
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.11s
[INFO] running `"docker" "inspect" "ecb0ec1c8937324f84be87d22dbc5ff10d52def119eedd98cf3c4f84ff281197"`
[INFO] running `"docker" "rm" "-f" "ecb0ec1c8937324f84be87d22dbc5ff10d52def119eedd98cf3c4f84ff281197"`
[INFO] [stdout] ecb0ec1c8937324f84be87d22dbc5ff10d52def119eedd98cf3c4f84ff281197