[INFO] updating cached repository pepeul1191/rust-tutorial [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/pepeul1191/rust-tutorial [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/pepeul1191/rust-tutorial" "work/ex/beta-1.37-6/sources/1.36.0/gh/pepeul1191/rust-tutorial"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/pepeul1191/rust-tutorial'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/pepeul1191/rust-tutorial" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/pepeul1191/rust-tutorial"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/pepeul1191/rust-tutorial'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b6a44b11db61c9d3e3eecf17c68275655e18cdde [INFO] sha for GitHub repo pepeul1191/rust-tutorial: b6a44b11db61c9d3e3eecf17c68275655e18cdde [INFO] validating manifest of pepeul1191/rust-tutorial on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of pepeul1191/rust-tutorial on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing pepeul1191/rust-tutorial [INFO] finished frobbing pepeul1191/rust-tutorial [INFO] frobbed toml for pepeul1191/rust-tutorial written to work/ex/beta-1.37-6/sources/1.36.0/gh/pepeul1191/rust-tutorial/Cargo.toml [INFO] started frobbing pepeul1191/rust-tutorial [INFO] finished frobbing pepeul1191/rust-tutorial [INFO] frobbed toml for pepeul1191/rust-tutorial written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/pepeul1191/rust-tutorial/Cargo.toml [INFO] crate pepeul1191/rust-tutorial already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing pepeul1191/rust-tutorial against 1.36.0 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/pepeul1191/rust-tutorial:/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" "+1.36.0" "build" "--frozen"` [INFO] [stdout] 41fe4600ff344a8ea4a04b8544c126f748f040bf0691fa3abbba6ba9ce0f66df [INFO] running `"docker" "start" "-a" "41fe4600ff344a8ea4a04b8544c126f748f040bf0691fa3abbba6ba9ce0f66df"` [INFO] [stderr] Compiling memchr v2.0.1 [INFO] [stderr] Compiling url v1.6.0 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling mustache v0.8.2 [INFO] [stderr] Compiling aho-corasick v0.6.4 [INFO] [stderr] Compiling regex v0.2.5 [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] Compiling hyper v0.10.13 [INFO] [stderr] Compiling nickel v0.10.1 [INFO] [stderr] Compiling nickel-demo v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `is_it_true` [INFO] [stderr] --> src/main.rs:11:7 [INFO] [stderr] | [INFO] [stderr] 11 | let is_it_true: bool = true; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_is_it_true` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `let_x` [INFO] [stderr] --> src/main.rs:12:7 [INFO] [stderr] | [INFO] [stderr] 12 | let let_x: char = 'x'; [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_let_x` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:10:7 [INFO] [stderr] | [INFO] [stderr] 10 | let mut num: i32 = 10; [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: function is never used: `func2` [INFO] [stderr] --> src/constants.rs:2:2 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn func2() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `goodbye` [INFO] [stderr] --> src/english/farewells.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | fn goodbye() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `hello` [INFO] [stderr] --> src/japanese/greetings.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | fn hello() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `goodbye` [INFO] [stderr] --> src/japanese/farewells.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | fn goodbye() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:32:3 [INFO] [stderr] | [INFO] [stderr] 32 | server.listen("127.0.0.1:6767"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 36.14s [INFO] running `"docker" "inspect" "41fe4600ff344a8ea4a04b8544c126f748f040bf0691fa3abbba6ba9ce0f66df"` [INFO] running `"docker" "rm" "-f" "41fe4600ff344a8ea4a04b8544c126f748f040bf0691fa3abbba6ba9ce0f66df"` [INFO] [stdout] 41fe4600ff344a8ea4a04b8544c126f748f040bf0691fa3abbba6ba9ce0f66df [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/pepeul1191/rust-tutorial:/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" "+1.36.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 4324664f3bab7526d36abe6bb9bc1150d8c4766c4198432d185fd73da4839add [INFO] running `"docker" "start" "-a" "4324664f3bab7526d36abe6bb9bc1150d8c4766c4198432d185fd73da4839add"` [INFO] [stderr] Compiling nickel-demo v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `is_it_true` [INFO] [stderr] --> src/main.rs:11:7 [INFO] [stderr] | [INFO] [stderr] 11 | let is_it_true: bool = true; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_is_it_true` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `let_x` [INFO] [stderr] --> src/main.rs:12:7 [INFO] [stderr] | [INFO] [stderr] 12 | let let_x: char = 'x'; [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_let_x` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:10:7 [INFO] [stderr] | [INFO] [stderr] 10 | let mut num: i32 = 10; [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: function is never used: `func2` [INFO] [stderr] --> src/constants.rs:2:2 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn func2() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `goodbye` [INFO] [stderr] --> src/english/farewells.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | fn goodbye() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `hello` [INFO] [stderr] --> src/japanese/greetings.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | fn hello() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `goodbye` [INFO] [stderr] --> src/japanese/farewells.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | fn goodbye() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:32:3 [INFO] [stderr] | [INFO] [stderr] 32 | server.listen("127.0.0.1:6767"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_must_use)] on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.91s [INFO] running `"docker" "inspect" "4324664f3bab7526d36abe6bb9bc1150d8c4766c4198432d185fd73da4839add"` [INFO] running `"docker" "rm" "-f" "4324664f3bab7526d36abe6bb9bc1150d8c4766c4198432d185fd73da4839add"` [INFO] [stdout] 4324664f3bab7526d36abe6bb9bc1150d8c4766c4198432d185fd73da4839add [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/pepeul1191/rust-tutorial:/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" "+1.36.0" "test" "--frozen"` [INFO] [stdout] 50c7e0c1f5c196fd6fb0ca70815a06d135382b84d2e8141c81e67b3d878d0422 [INFO] running `"docker" "start" "-a" "50c7e0c1f5c196fd6fb0ca70815a06d135382b84d2e8141c81e67b3d878d0422"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running /opt/crater/target/debug/deps/nickel_demo-239af0045124d2e4 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "50c7e0c1f5c196fd6fb0ca70815a06d135382b84d2e8141c81e67b3d878d0422"` [INFO] running `"docker" "rm" "-f" "50c7e0c1f5c196fd6fb0ca70815a06d135382b84d2e8141c81e67b3d878d0422"` [INFO] [stdout] 50c7e0c1f5c196fd6fb0ca70815a06d135382b84d2e8141c81e67b3d878d0422