[INFO] updating cached repository lethe2211/iron_sample [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/lethe2211/iron_sample [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/lethe2211/iron_sample" "work/ex/beta-1.38-1/sources/1.37.0/gh/lethe2211/iron_sample"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lethe2211/iron_sample'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/lethe2211/iron_sample" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lethe2211/iron_sample"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lethe2211/iron_sample'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b37506d0d519b2e9ef4de3e7c98875816673a6ea [INFO] sha for GitHub repo lethe2211/iron_sample: b37506d0d519b2e9ef4de3e7c98875816673a6ea [INFO] validating manifest of lethe2211/iron_sample on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of lethe2211/iron_sample on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing lethe2211/iron_sample [INFO] finished frobbing lethe2211/iron_sample [INFO] frobbed toml for lethe2211/iron_sample written to work/ex/beta-1.38-1/sources/1.37.0/gh/lethe2211/iron_sample/Cargo.toml [INFO] started frobbing lethe2211/iron_sample [INFO] finished frobbing lethe2211/iron_sample [INFO] frobbed toml for lethe2211/iron_sample written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lethe2211/iron_sample/Cargo.toml [INFO] crate lethe2211/iron_sample already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing lethe2211/iron_sample against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lethe2211/iron_sample:/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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] b39c261c8717e2a307b35b451056a6a63d69c85a13c872be9ac1bd0c8f3c0b27 [INFO] running `"docker" "start" "-a" "b39c261c8717e2a307b35b451056a6a63d69c85a13c872be9ac1bd0c8f3c0b27"` [INFO] [stderr] Compiling matches v0.1.4 [INFO] [stderr] Compiling gcc v0.3.45 [INFO] [stderr] Compiling unicode-normalization v0.1.4 [INFO] [stderr] Compiling libc v0.2.22 [INFO] [stderr] Compiling openssl v0.9.11 [INFO] [stderr] Compiling httparse v1.2.2 [INFO] [stderr] Compiling bitflags v0.8.2 [INFO] [stderr] Compiling serde v1.0.2 [INFO] [stderr] Compiling unsafe-any v0.4.1 [INFO] [stderr] Compiling mime v0.2.3 [INFO] [stderr] Compiling error v0.1.9 [INFO] [stderr] Compiling conduit-mime-types v0.7.3 [INFO] [stderr] Compiling unicase v1.4.0 [INFO] [stderr] Compiling hyper v0.10.9 [INFO] [stderr] Compiling unicode-bidi v0.2.5 [INFO] [stderr] Compiling typemap v0.3.3 [INFO] [stderr] Compiling time v0.1.37 [INFO] [stderr] Compiling num_cpus v1.4.0 [INFO] [stderr] Compiling plugin v0.2.6 [INFO] [stderr] Compiling idna v0.1.1 [INFO] [stderr] Compiling openssl-sys v0.9.11 [INFO] [stderr] Compiling url v1.4.0 [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-1.4.0/src/form_urlencoded.rs:246:40 [INFO] [stderr] | [INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] 245 | fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization } [INFO] [stderr] 246 | 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] Compiling native-tls v0.1.2 [INFO] [stderr] Compiling serde_json v1.0.1 [INFO] [stderr] Compiling iron v0.5.1 [INFO] [stderr] Compiling hyper-native-tls v0.2.2 [INFO] [stderr] Compiling router v0.5.1 [INFO] [stderr] Compiling iron_example v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/main.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert::From` [INFO] [stderr] --> src/main.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::convert::From; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Handler` [INFO] [stderr] --> src/main.rs:17:12 [INFO] [stderr] | [INFO] [stderr] 17 | use iron::{Handler}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Error` [INFO] [stderr] --> src/main.rs:22:25 [INFO] [stderr] | [INFO] [stderr] 22 | use serde_json::{Value, Error}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `res` [INFO] [stderr] --> src/main.rs:39:17 [INFO] [stderr] | [INFO] [stderr] 39 | let mut res = client.get(url) [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_res` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `query` [INFO] [stderr] --> src/main.rs:52:17 [INFO] [stderr] | [INFO] [stderr] 52 | let ref query = req.extensions.get::().unwrap().find("query").unwrap_or("/"); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_query` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:39:13 [INFO] [stderr] | [INFO] [stderr] 39 | let mut res = client.get(url) [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] Finished dev [unoptimized + debuginfo] target(s) in 44.03s [INFO] running `"docker" "inspect" "b39c261c8717e2a307b35b451056a6a63d69c85a13c872be9ac1bd0c8f3c0b27"` [INFO] running `"docker" "rm" "-f" "b39c261c8717e2a307b35b451056a6a63d69c85a13c872be9ac1bd0c8f3c0b27"` [INFO] [stdout] b39c261c8717e2a307b35b451056a6a63d69c85a13c872be9ac1bd0c8f3c0b27 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lethe2211/iron_sample:/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" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] b00aeee3d5ad5b25ea8a1efac499ac87308d4b2d640a3a0cdf956102c437e37c [INFO] running `"docker" "start" "-a" "b00aeee3d5ad5b25ea8a1efac499ac87308d4b2d640a3a0cdf956102c437e37c"` [INFO] [stderr] Compiling iron_example v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/main.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert::From` [INFO] [stderr] --> src/main.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::convert::From; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Handler` [INFO] [stderr] --> src/main.rs:17:12 [INFO] [stderr] | [INFO] [stderr] 17 | use iron::{Handler}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Error` [INFO] [stderr] --> src/main.rs:22:25 [INFO] [stderr] | [INFO] [stderr] 22 | use serde_json::{Value, Error}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `res` [INFO] [stderr] --> src/main.rs:39:17 [INFO] [stderr] | [INFO] [stderr] 39 | let mut res = client.get(url) [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_res` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `query` [INFO] [stderr] --> src/main.rs:52:17 [INFO] [stderr] | [INFO] [stderr] 52 | let ref query = req.extensions.get::().unwrap().find("query").unwrap_or("/"); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_query` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:39:13 [INFO] [stderr] | [INFO] [stderr] 39 | let mut res = client.get(url) [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] Finished dev [unoptimized + debuginfo] target(s) in 0.86s [INFO] running `"docker" "inspect" "b00aeee3d5ad5b25ea8a1efac499ac87308d4b2d640a3a0cdf956102c437e37c"` [INFO] running `"docker" "rm" "-f" "b00aeee3d5ad5b25ea8a1efac499ac87308d4b2d640a3a0cdf956102c437e37c"` [INFO] [stdout] b00aeee3d5ad5b25ea8a1efac499ac87308d4b2d640a3a0cdf956102c437e37c [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lethe2211/iron_sample:/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" "+1.37.0" "test" "--frozen"` [INFO] [stdout] 2b7f67515a289cc63e79790ff9ffd7cad32ab388269818e7ca234e2398e0f865 [INFO] running `"docker" "start" "-a" "2b7f67515a289cc63e79790ff9ffd7cad32ab388269818e7ca234e2398e0f865"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running /opt/crater/target/debug/deps/iron_example-87695d024f81739a [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" "2b7f67515a289cc63e79790ff9ffd7cad32ab388269818e7ca234e2398e0f865"` [INFO] running `"docker" "rm" "-f" "2b7f67515a289cc63e79790ff9ffd7cad32ab388269818e7ca234e2398e0f865"` [INFO] [stdout] 2b7f67515a289cc63e79790ff9ffd7cad32ab388269818e7ca234e2398e0f865