[INFO] updating cached repository https://github.com/aaronriekenberg/rust_hyper
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cc5295d21f886189d8d546472ee458c413dc6f3e
[INFO] testing aaronriekenberg/rust_hyper against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Faaronriekenberg%2Frust_hyper" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aaronriekenberg/rust_hyper on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aaronriekenberg/rust_hyper
[INFO] finished tweaking git repo https://github.com/aaronriekenberg/rust_hyper
[INFO] tweaked toml for git repo https://github.com/aaronriekenberg/rust_hyper written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/aaronriekenberg/rust_hyper already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 55c116b2fc4b0cb2ed3a5e7deabb82a858d31f52359f1b9964580cd27aff6217
[INFO] running `"docker" "start" "-a" "55c116b2fc4b0cb2ed3a5e7deabb82a858d31f52359f1b9964580cd27aff6217"`
[INFO] [stderr]    Compiling serde v1.0.83
[INFO] [stderr]    Compiling arc-swap v0.3.7
[INFO] [stderr]    Compiling string v0.1.2
[INFO] [stderr]    Compiling horrorshow v0.6.4
[INFO] [stderr]    Compiling fern v0.5.7
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling http v0.1.14
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling signal-hook v0.1.7
[INFO] [stderr]    Compiling tokio-signal v0.2.7
[INFO] [stderr]    Compiling tokio-process v0.2.3
[INFO] [stderr]    Compiling h2 v0.1.14
[INFO] [stderr]    Compiling serde_derive v1.0.83
[INFO] [stderr]    Compiling hyper v0.12.19
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling rust_hyper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:153:70
[INFO] [stderr]     |
[INFO] [stderr] 153 | pub fn read_config(config_file: String) -> Result<Configuration, Box<::std::error::Error>> {
[INFO] [stderr]     |                                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[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/environment.rs:17:41
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn get_git_hash() -> Result<String, Box<::std::error::Error>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/environment.rs:37:53
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn get_environment() -> Result<Environment, Box<::std::error::Error>> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/command/api.rs:21:14
[INFO] [stderr]    |
[INFO] [stderr] 21 |     ) -> Box<Future<Item = String, Error = crate::server::HandlerError> + Send> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = String, Error = crate::server::HandlerError> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/command/html.rs:17:78
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(command_info: crate::config::CommandInfo) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                                                                              ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/index.rs:19:27
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/proxy/api.rs:27:14
[INFO] [stderr]    |
[INFO] [stderr] 27 |     ) -> Box<Future<Item = ResponseInfo, Error = crate::server::HandlerError> + Send> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ResponseInfo, Error = crate::server::HandlerError> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/proxy/api.rs:68:74
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new(proxy_info: crate::config::ProxyInfo) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/proxy/html.rs:17:74
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(proxy_info: crate::config::ProxyInfo) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/static_file.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 |     ) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/static_file.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 | ) -> Box<Future<Item = ::hyper::Response<::hyper::Body>, Error = ::std::io::Error> + Send> {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ::hyper::Response<::hyper::Body>, Error = ::std::io::Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/handlers/static_file.rs:111:10
[INFO] [stderr]     |
[INFO] [stderr] 111 | ) -> Box<Future<Item = ::hyper::Response<::hyper::Body>, Error = ::std::io::Error> + Send> {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ::hyper::Response<::hyper::Body>, Error = ::std::io::Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/logging.rs:47:47
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn initialize_logging() -> Result<(), Box<::std::error::Error>> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server.rs:126:32
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |     Box<Future<Item = ::hyper::Response<::hyper::Body>, Error = HandlerError> + Send>;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ::hyper::Response<::hyper::Body>, Error = HandlerError> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server.rs:276:21
[INFO] [stderr]     |
[INFO] [stderr] 276 | ) -> Result<(), Box<error::Error>> {
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:20:45
[INFO] [stderr]    |
[INFO] [stderr] 20 | ) -> Result<server::RouteConfiguration, Box<std::error::Error>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:67:46
[INFO] [stderr]    |
[INFO] [stderr] 67 | ) -> Result<server::ServerConfiguration, Box<std::error::Error>> {
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.07s
[INFO] running `"docker" "inspect" "55c116b2fc4b0cb2ed3a5e7deabb82a858d31f52359f1b9964580cd27aff6217"`
[INFO] running `"docker" "rm" "-f" "55c116b2fc4b0cb2ed3a5e7deabb82a858d31f52359f1b9964580cd27aff6217"`
[INFO] [stdout] 55c116b2fc4b0cb2ed3a5e7deabb82a858d31f52359f1b9964580cd27aff6217
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2ab6538d21a0beeba1720e4b0570dc43af2dc24eef3c3b8a57199ca9e0a0b516
[INFO] running `"docker" "start" "-a" "2ab6538d21a0beeba1720e4b0570dc43af2dc24eef3c3b8a57199ca9e0a0b516"`
[INFO] [stderr]    Compiling rust_hyper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/config.rs:153:70
[INFO] [stderr]     |
[INFO] [stderr] 153 | pub fn read_config(config_file: String) -> Result<Configuration, Box<::std::error::Error>> {
[INFO] [stderr]     |                                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[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/environment.rs:17:41
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn get_git_hash() -> Result<String, Box<::std::error::Error>> {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/environment.rs:37:53
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn get_environment() -> Result<Environment, Box<::std::error::Error>> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/command/api.rs:21:14
[INFO] [stderr]    |
[INFO] [stderr] 21 |     ) -> Box<Future<Item = String, Error = crate::server::HandlerError> + Send> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = String, Error = crate::server::HandlerError> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/command/html.rs:17:78
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(command_info: crate::config::CommandInfo) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                                                                              ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/index.rs:19:27
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/proxy/api.rs:27:14
[INFO] [stderr]    |
[INFO] [stderr] 27 |     ) -> Box<Future<Item = ResponseInfo, Error = crate::server::HandlerError> + Send> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ResponseInfo, Error = crate::server::HandlerError> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/proxy/api.rs:68:74
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new(proxy_info: crate::config::ProxyInfo) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/proxy/html.rs:17:74
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(proxy_info: crate::config::ProxyInfo) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/static_file.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 |     ) -> Result<Self, Box<::std::error::Error>> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/handlers/static_file.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 | ) -> Box<Future<Item = ::hyper::Response<::hyper::Body>, Error = ::std::io::Error> + Send> {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ::hyper::Response<::hyper::Body>, Error = ::std::io::Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/handlers/static_file.rs:111:10
[INFO] [stderr]     |
[INFO] [stderr] 111 | ) -> Box<Future<Item = ::hyper::Response<::hyper::Body>, Error = ::std::io::Error> + Send> {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ::hyper::Response<::hyper::Body>, Error = ::std::io::Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/logging.rs:47:47
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn initialize_logging() -> Result<(), Box<::std::error::Error>> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server.rs:126:32
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |     Box<Future<Item = ::hyper::Response<::hyper::Body>, Error = HandlerError> + Send>;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ::hyper::Response<::hyper::Body>, Error = HandlerError> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/server.rs:276:21
[INFO] [stderr]     |
[INFO] [stderr] 276 | ) -> Result<(), Box<error::Error>> {
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:20:45
[INFO] [stderr]    |
[INFO] [stderr] 20 | ) -> Result<server::RouteConfiguration, Box<std::error::Error>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:67:46
[INFO] [stderr]    |
[INFO] [stderr] 67 | ) -> Result<server::ServerConfiguration, Box<std::error::Error>> {
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "2ab6538d21a0beeba1720e4b0570dc43af2dc24eef3c3b8a57199ca9e0a0b516"`
[INFO] running `"docker" "rm" "-f" "2ab6538d21a0beeba1720e4b0570dc43af2dc24eef3c3b8a57199ca9e0a0b516"`
[INFO] [stdout] 2ab6538d21a0beeba1720e4b0570dc43af2dc24eef3c3b8a57199ca9e0a0b516
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] f661d77d2bad882612f90bcaa8d801f6aae41bcfe82e9e80f3df117d5c07a4bf
[INFO] running `"docker" "start" "-a" "f661d77d2bad882612f90bcaa8d801f6aae41bcfe82e9e80f3df117d5c07a4bf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_hyper-5517cc0c1ca7c844
[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" "f661d77d2bad882612f90bcaa8d801f6aae41bcfe82e9e80f3df117d5c07a4bf"`
[INFO] running `"docker" "rm" "-f" "f661d77d2bad882612f90bcaa8d801f6aae41bcfe82e9e80f3df117d5c07a4bf"`
[INFO] [stdout] f661d77d2bad882612f90bcaa8d801f6aae41bcfe82e9e80f3df117d5c07a4bf