[INFO] cloning repository https://github.com/syml/rust-webserver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/syml/rust-webserver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsyml%2Frust-webserver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsyml%2Frust-webserver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ba8ca64ad6a54e69550773f991219d1803bb683
[INFO] checking syml/rust-webserver against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsyml%2Frust-webserver" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/syml/rust-webserver on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/syml/rust-webserver
[INFO] finished tweaking git repo https://github.com/syml/rust-webserver
[INFO] tweaked toml for git repo https://github.com/syml/rust-webserver written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/syml/rust-webserver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex v0.1.77
[INFO] [stderr]   Downloaded regex-syntax v0.3.5
[INFO] [stderr]   Downloaded mio v0.6.0
[INFO] [stderr]   Downloaded lazycell v0.4.0
[INFO] [stderr]   Downloaded miow v0.1.3
[INFO] [stderr]   Downloaded net2 v0.2.26
[INFO] [stderr]   Downloaded libc v0.2.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0aa6de6c6ef6f0603e8d4ec72e78a990ad114ad486e786311e4ff9457fd57e6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d0aa6de6c6ef6f0603e8d4ec72e78a990ad114ad486e786311e4ff9457fd57e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0aa6de6c6ef6f0603e8d4ec72e78a990ad114ad486e786311e4ff9457fd57e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0aa6de6c6ef6f0603e8d4ec72e78a990ad114ad486e786311e4ff9457fd57e6", kill_on_drop: false }`
[INFO] [stdout] d0aa6de6c6ef6f0603e8d4ec72e78a990ad114ad486e786311e4ff9457fd57e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ed3e6b20c6944230665c66e178547135974efdc81aaf7081a3c77ce6c9a7045c
[INFO] running `Command { std: "docker" "start" "-a" "ed3e6b20c6944230665c66e178547135974efdc81aaf7081a3c77ce6c9a7045c", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.3.5
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking regex v0.1.77
[INFO] [stderr]     Checking mio v0.6.0
[INFO] [stderr]     Checking webserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event_loop.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn duplicate(&self) -> Box<EventHandler>;
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event_loop.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |     event_handler: Box<EventHandler>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event_loop.rs:29:67
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn new(host: &str, num_workers: usize, event_handler: Box<EventHandler>) -> EventLoop {
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event_loop.rs:37:70
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn process_events(channel: Receiver<Msg>, mut event_handler: Box<EventHandler>) {
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/app_server.rs:9:32
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn duplicate(&self) -> Box<App>;
[INFO] [stdout]   |                                ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 |     app: Box<App>,
[INFO] [stdout]    |              ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(app: Box<App>, stream: TcpStream) -> AppWithStream {
[INFO] [stdout]    |                     ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:36:14
[INFO] [stdout]    |
[INFO] [stdout] 36 |     app: Box<App>,
[INFO] [stdout]    |              ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:40:21
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(app: Box<App>) -> AppEventHandler {
[INFO] [stdout]    |                     ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:88:32
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn duplicate(&self) -> Box<EventHandler> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:96:14
[INFO] [stdout]    |
[INFO] [stdout] 96 |     app: Box<App>,
[INFO] [stdout]    |              ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:99:57
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn new(host: &str, num_workers: usize, app: Box<App>) -> AppServer {
[INFO] [stdout]    |                                                         ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handlers.rs:21:32
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn duplicate(&self) -> Box<Handler> {
[INFO] [stdout]    |                                ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handlers.rs:42:32
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn duplicate(&self) -> Box<Handler> {
[INFO] [stdout]    |                                ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/handler_lib.rs:9:32
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn duplicate(&self) -> Box<Handler>;
[INFO] [stdout]   |                                ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler_lib.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct HandlerRule(Regex, Box<Handler>);
[INFO] [stdout]    |                               ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler_lib.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct HandlerRoute(pub String, pub Box<Handler>);
[INFO] [stdout]    |                                             ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler_lib.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn duplicate(&self) -> Box<App> {
[INFO] [stdout]    |                                ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event_loop.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn duplicate(&self) -> Box<EventHandler>;
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event_loop.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |     event_handler: Box<EventHandler>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event_loop.rs:29:67
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn new(host: &str, num_workers: usize, event_handler: Box<EventHandler>) -> EventLoop {
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event_loop.rs:37:70
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn process_events(channel: Receiver<Msg>, mut event_handler: Box<EventHandler>) {
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/app_server.rs:9:32
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn duplicate(&self) -> Box<App>;
[INFO] [stdout]   |                                ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 |     app: Box<App>,
[INFO] [stdout]    |              ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(app: Box<App>, stream: TcpStream) -> AppWithStream {
[INFO] [stdout]    |                     ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:36:14
[INFO] [stdout]    |
[INFO] [stdout] 36 |     app: Box<App>,
[INFO] [stdout]    |              ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:40:21
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(app: Box<App>) -> AppEventHandler {
[INFO] [stdout]    |                     ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:88:32
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn duplicate(&self) -> Box<EventHandler> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn EventHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:96:14
[INFO] [stdout]    |
[INFO] [stdout] 96 |     app: Box<App>,
[INFO] [stdout]    |              ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/app_server.rs:99:57
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn new(host: &str, num_workers: usize, app: Box<App>) -> AppServer {
[INFO] [stdout]    |                                                         ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handlers.rs:21:32
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn duplicate(&self) -> Box<Handler> {
[INFO] [stdout]    |                                ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handlers.rs:42:32
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn duplicate(&self) -> Box<Handler> {
[INFO] [stdout]    |                                ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/handler_lib.rs:9:32
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn duplicate(&self) -> Box<Handler>;
[INFO] [stdout]   |                                ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler_lib.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct HandlerRule(Regex, Box<Handler>);
[INFO] [stdout]    |                               ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler_lib.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct HandlerRoute(pub String, pub Box<Handler>);
[INFO] [stdout]    |                                             ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler_lib.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn duplicate(&self) -> Box<App> {
[INFO] [stdout]    |                                ^^^ help: use `dyn`: `dyn App`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.14s
[INFO] running `Command { std: "docker" "inspect" "ed3e6b20c6944230665c66e178547135974efdc81aaf7081a3c77ce6c9a7045c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed3e6b20c6944230665c66e178547135974efdc81aaf7081a3c77ce6c9a7045c", kill_on_drop: false }`
[INFO] [stdout] ed3e6b20c6944230665c66e178547135974efdc81aaf7081a3c77ce6c9a7045c