[INFO] updating cached repository amazingmo/Basics [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/amazingmo/Basics [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/amazingmo/Basics" "work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/amazingmo/Basics"` [INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/amazingmo/Basics'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/amazingmo/Basics" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/amazingmo/Basics"` [INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/amazingmo/Basics'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a8c4f50b81a384f001af242baa3affc9e6d169ad [INFO] sha for GitHub repo amazingmo/Basics: a8c4f50b81a384f001af242baa3affc9e6d169ad [INFO] validating manifest of amazingmo/Basics on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of amazingmo/Basics on toolchain try#74092351c05ae61047b2be02024415546595e974 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing amazingmo/Basics [INFO] finished frobbing amazingmo/Basics [INFO] frobbed toml for amazingmo/Basics written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/amazingmo/Basics/Cargo.toml [INFO] started frobbing amazingmo/Basics [INFO] finished frobbing amazingmo/Basics [INFO] frobbed toml for amazingmo/Basics written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/amazingmo/Basics/Cargo.toml [INFO] crate amazingmo/Basics already has a lockfile, it will not be regenerated [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking amazingmo/Basics against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60174 [INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-0/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/amazingmo/Basics:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] f41b306432a5224412a029e221a424b5a4a024a4ba65e364205c4cdd5273cd20 [INFO] running `"docker" "start" "-a" "f41b306432a5224412a029e221a424b5a4a024a4ba65e364205c4cdd5273cd20"` [INFO] [stderr] Checking base64 v0.6.0 [INFO] [stderr] Checking serde_json v0.8.6 [INFO] [stderr] Checking url v1.6.0 [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-1.6.0/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] [INFO] [stderr] Checking hyper v0.10.13 [INFO] [stderr] Checking iron v0.5.1 [INFO] [stderr] Checking persistent v0.3.0 [INFO] [stderr] Checking router v0.5.1 [INFO] [stderr] Checking bodyparser v0.5.0 [INFO] [stderr] Checking urlencoded v0.5.0 [INFO] [stderr] Checking chapter1 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/main.rs:20:1 [INFO] [stderr] | [INFO] [stderr] 20 | #[macro_use] extern crate mime; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `iron::prelude::*` [INFO] [stderr] --> src/main.rs:25:5 [INFO] [stderr] | [INFO] [stderr] 25 | use iron::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `iron::status` [INFO] [stderr] --> src/main.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 26 | use iron::status; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/main.rs:20:1 [INFO] [stderr] | [INFO] [stderr] 20 | #[macro_use] extern crate mime; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `iron::prelude::*` [INFO] [stderr] --> src/main.rs:25:5 [INFO] [stderr] | [INFO] [stderr] 25 | use iron::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `iron::status` [INFO] [stderr] --> src/main.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 26 | use iron::status; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 9.79s [INFO] running `"docker" "inspect" "f41b306432a5224412a029e221a424b5a4a024a4ba65e364205c4cdd5273cd20"` [INFO] running `"docker" "rm" "-f" "f41b306432a5224412a029e221a424b5a4a024a4ba65e364205c4cdd5273cd20"` [INFO] [stdout] f41b306432a5224412a029e221a424b5a4a024a4ba65e364205c4cdd5273cd20