[INFO] cloning repository https://github.com/koute/cargo-web
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/koute/cargo-web" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoute%2Fcargo-web", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoute%2Fcargo-web'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ddd9bbb567b8d4893e923cba8ad03806d383d80
[INFO] checking koute/cargo-web against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoute%2Fcargo-web" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/koute/cargo-web on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/koute/cargo-web
[INFO] finished tweaking git repo https://github.com/koute/cargo-web
[INFO] tweaked toml for git repo https://github.com/koute/cargo-web written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/koute/cargo-web already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17541a05335b28b524a462f5aaaf621990c308d02fec7245f48df1b3a0018e89
[INFO] running `Command { std: "docker" "start" "-a" "17541a05335b28b524a462f5aaaf621990c308d02fec7245f48df1b3a0018e89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17541a05335b28b524a462f5aaaf621990c308d02fec7245f48df1b3a0018e89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17541a05335b28b524a462f5aaaf621990c308d02fec7245f48df1b3a0018e89", kill_on_drop: false }`
[INFO] [stdout] 17541a05335b28b524a462f5aaaf621990c308d02fec7245f48df1b3a0018e89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba4b562f3cc1252469df34ef0a3fcff2c777973de35330139cc6d6920bf03a67
[INFO] running `Command { std: "docker" "start" "-a" "ba4b562f3cc1252469df34ef0a3fcff2c777973de35330139cc6d6920bf03a67", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/wasm.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Read, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/wasm.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Read, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 |     RuntimeError( String, Box< error::Error > ),
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     RuntimeError( String, Box< dyn error::Error > ),
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Other( Box< error::Error > )
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Other( Box< dyn error::Error > )
[INFO] [stdout]    |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/http_utils.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub type FnHandler = Box< Fn( Request< hyper::Body > ) -> ResponseFuture + Send + Sync >;
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub type FnHandler = Box< dyn Fn( Request< hyper::Body > ) -> ResponseFuture + Send + Sync >;
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/http_utils.rs:53:32
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub type ResponseFuture = Box< Future< Item = Response< Body >, Error = hyper::Error > + Send >;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub type ResponseFuture = Box< dyn Future< Item = Response< Body >, Error = hyper::Error > + Send >;
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl From< Box< error::Error > > for Error {
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl From< Box< dyn error::Error > > for Error {
[INFO] [stdout]    |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:54:24
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn from( err: Box< error::Error > ) -> Self {
[INFO] [stdout]    |                        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn from( err: Box< dyn error::Error > ) -> Self {
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/http_utils.rs:55:31
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub type ServiceFuture = Box< Future< Item = SimpleService, Error = hyper::Error > + Send >;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub type ServiceFuture = Box< dyn Future< Item = SimpleService, Error = hyper::Error > + Send >;
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 |     RuntimeError( String, Box< error::Error > ),
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     RuntimeError( String, Box< dyn error::Error > ),
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Other( Box< error::Error > )
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Other( Box< dyn error::Error > )
[INFO] [stdout]    |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/http_utils.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub type FnHandler = Box< Fn( Request< hyper::Body > ) -> ResponseFuture + Send + Sync >;
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub type FnHandler = Box< dyn Fn( Request< hyper::Body > ) -> ResponseFuture + Send + Sync >;
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/http_utils.rs:53:32
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub type ResponseFuture = Box< Future< Item = Response< Body >, Error = hyper::Error > + Send >;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub type ResponseFuture = Box< dyn Future< Item = Response< Body >, Error = hyper::Error > + Send >;
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl From< Box< error::Error > > for Error {
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl From< Box< dyn error::Error > > for Error {
[INFO] [stdout]    |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:54:24
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn from( err: Box< error::Error > ) -> Self {
[INFO] [stdout]    |                        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn from( err: Box< dyn error::Error > ) -> Self {
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/http_utils.rs:55:31
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub type ServiceFuture = Box< Future< Item = SimpleService, Error = hyper::Error > + Send >;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub type ServiceFuture = Box< dyn Future< Item = SimpleService, Error = hyper::Error > + Send >;
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/cargo_shim/mod.rs:267:86
[INFO] [stdout]     |
[INFO] [stdout] 267 |             Error::CannotLaunchCargo( ref err ) => write!( formatter, "{}: {}", self.description(), err ),
[INFO] [stdout]     |                                                                                      ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/cargo_shim/mod.rs:268:80
[INFO] [stdout]     |
[INFO] [stdout] 268 |             Error::CargoFailed( ref err ) => write!( formatter, "{}: {}", self.description(), err ),
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/cargo_shim/mod.rs:269:91
[INFO] [stdout]     |
[INFO] [stdout] 269 |             Error::CannotParseCargoOutput( ref err ) => write!( formatter, "{}: {}", self.description(), err )
[INFO] [stdout]     |                                                                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/cargo_shim/mod.rs:267:86
[INFO] [stdout]     |
[INFO] [stdout] 267 |             Error::CannotLaunchCargo( ref err ) => write!( formatter, "{}: {}", self.description(), err ),
[INFO] [stdout]     |                                                                                      ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/cargo_shim/mod.rs:268:80
[INFO] [stdout]     |
[INFO] [stdout] 268 |             Error::CargoFailed( ref err ) => write!( formatter, "{}: {}", self.description(), err ),
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/cargo_shim/mod.rs:269:91
[INFO] [stdout]     |
[INFO] [stdout] 269 |             Error::CannotParseCargoOutput( ref err ) => write!( formatter, "{}: {}", self.description(), err )
[INFO] [stdout]     |                                                                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:34:93
[INFO] [stdout]    |
[INFO] [stdout] 34 |             ConnectionError::FailedToFetchUrl( ref message ) => write!( fmt, "{}: {}", self.description(), message ),
[INFO] [stdout]    |                                                                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:35:91
[INFO] [stdout]    |
[INFO] [stdout] 35 |             ConnectionError::WebSocketError( ref message ) => write!( fmt, "{}: {}", self.description(), message )
[INFO] [stdout]    |                                                                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:70:84
[INFO] [stdout]    |
[INFO] [stdout] 70 |             CommunicationError::Send( ref message ) => write!( fmt, "{}: {}", self.description(), message ),
[INFO] [stdout]    |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:71:84
[INFO] [stdout]    |
[INFO] [stdout] 71 |             CommunicationError::Recv( ref message ) => write!( fmt, "{}: {}", self.description(), message )
[INFO] [stdout]    |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:98:60
[INFO] [stdout]    |
[INFO] [stdout] 98 |             ReplyError::Timeout => write!( fmt, "{}", self.description() ),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:99:86
[INFO] [stdout]    |
[INFO] [stdout] 99 |             ReplyError::MalformedMessage( ref error ) => write!( fmt, "{}: {}", self.description(), error ),
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/chrome_devtools.rs:100:83
[INFO] [stdout]     |
[INFO] [stdout] 100 |             ReplyError::MalformedJson( ref error ) => write!( fmt, "{}: {}", self.description(), error ),
[INFO] [stdout]     |                                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/chrome_devtools.rs:101:88
[INFO] [stdout]     |
[INFO] [stdout] 101 |             ReplyError::CommunicationError( ref error ) => write!( fmt, "{}: {}", self.description(), error )
[INFO] [stdout]     |                                                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:34:93
[INFO] [stdout]    |
[INFO] [stdout] 34 |             ConnectionError::FailedToFetchUrl( ref message ) => write!( fmt, "{}: {}", self.description(), message ),
[INFO] [stdout]    |                                                                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:35:91
[INFO] [stdout]    |
[INFO] [stdout] 35 |             ConnectionError::WebSocketError( ref message ) => write!( fmt, "{}: {}", self.description(), message )
[INFO] [stdout]    |                                                                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:70:84
[INFO] [stdout]    |
[INFO] [stdout] 70 |             CommunicationError::Send( ref message ) => write!( fmt, "{}: {}", self.description(), message ),
[INFO] [stdout]    |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:71:84
[INFO] [stdout]    |
[INFO] [stdout] 71 |             CommunicationError::Recv( ref message ) => write!( fmt, "{}: {}", self.description(), message )
[INFO] [stdout]    |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:98:60
[INFO] [stdout]    |
[INFO] [stdout] 98 |             ReplyError::Timeout => write!( fmt, "{}", self.description() ),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/chrome_devtools.rs:99:86
[INFO] [stdout]    |
[INFO] [stdout] 99 |             ReplyError::MalformedMessage( ref error ) => write!( fmt, "{}: {}", self.description(), error ),
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/chrome_devtools.rs:100:83
[INFO] [stdout]     |
[INFO] [stdout] 100 |             ReplyError::MalformedJson( ref error ) => write!( fmt, "{}: {}", self.description(), error ),
[INFO] [stdout]     |                                                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/chrome_devtools.rs:101:88
[INFO] [stdout]     |
[INFO] [stdout] 101 |             ReplyError::CommunicationError( ref error ) => write!( fmt, "{}: {}", self.description(), error )
[INFO] [stdout]     |                                                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:35:57
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Error::CargoShimError( ref error ) => error.description(),
[INFO] [stdout]    |                                                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:42:48
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Error::Other( ref error ) => error.description()
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:75:87
[INFO] [stdout]    |
[INFO] [stdout] 75 |             &Error::RuntimeError( _, ref inner ) => write!( formatter, "{}: {}", self.description(), inner ),
[INFO] [stdout]    |                                                                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:85:48
[INFO] [stdout]    |
[INFO] [stdout] 85 |             _ => write!( formatter, "{}", self.description() )
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:35:57
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Error::CargoShimError( ref error ) => error.description(),
[INFO] [stdout]    |                                                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:42:48
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Error::Other( ref error ) => error.description()
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:75:87
[INFO] [stdout]    |
[INFO] [stdout] 75 |             &Error::RuntimeError( _, ref inner ) => write!( formatter, "{}: {}", self.description(), inner ),
[INFO] [stdout]    |                                                                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:85:48
[INFO] [stdout]    |
[INFO] [stdout] 85 |             _ => write!( formatter, "{}", self.description() )
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/wasm.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/wasm.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cargo_shim/mod.rs:916:13
[INFO] [stdout]     |
[INFO] [stdout] 916 |         for mut artifact in &mut artifacts {
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cargo_shim/mod.rs:924:13
[INFO] [stdout]     |
[INFO] [stdout] 924 |         for mut artifact in artifacts {
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cargo_shim/mod.rs:916:13
[INFO] [stdout]     |
[INFO] [stdout] 916 |         for mut artifact in &mut artifacts {
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cargo_shim/mod.rs:924:13
[INFO] [stdout]     |
[INFO] [stdout] 924 |         for mut artifact in artifacts {
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/wasm_context.rs:541:38
[INFO] [stdout]     |
[INFO] [stdout] 541 |                 pw::Section::Export( mut section ) => {
[INFO] [stdout]     |                                      ----^^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/wasm_context.rs:579:40
[INFO] [stdout]     |
[INFO] [stdout] 579 |                 pw::Section::Function( mut section ) => {
[INFO] [stdout]     |                                        ----^^^^^^^
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/wasm_context.rs:541:38
[INFO] [stdout]     |
[INFO] [stdout] 541 |                 pw::Section::Export( mut section ) => {
[INFO] [stdout]     |                                      ----^^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/wasm_context.rs:579:40
[INFO] [stdout]     |
[INFO] [stdout] 579 |                 pw::Section::Function( mut section ) => {
[INFO] [stdout]     |                                        ----^^^^^^^
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `test` is never read
[INFO] [stdout]    --> src/lib.rs:272:5
[INFO] [stdout]     |
[INFO] [stdout] 260 | struct Target {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 272 |     test: Option<String>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Target` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Bench` is never constructed
[INFO] [stdout]   --> src/cargo_shim/mod.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub enum Profile {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 37 |     Bench
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Profile` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `default_package` and `used_packages` are never used
[INFO] [stdout]    --> src/cargo_shim/mod.rs:448:12
[INFO] [stdout]     |
[INFO] [stdout] 274 | impl CargoProject {
[INFO] [stdout]     | ----------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 448 |     pub fn default_package( &self ) -> Option< &CargoPackage > {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 452 |     pub fn used_packages( &self, triplet: &str, main_package: &CargoPackage, profile: Profile ) -> Vec< &CargoPackage > {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/wasm_gc.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |     Imported(&'a MemoryType),
[INFO] [stdout]     |     -------- ^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 176 |     Imported(()),
[INFO] [stdout]     |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/package.rs:104:35
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err( err ) => panic!( err )
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err( err ) => panic!( "{}", err )
[INFO] [stdout]     |                                   +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err( err ) => std::panic::panic_any( err )
[INFO] [stdout]     |                           ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/wasm_context.rs:871:34
[INFO] [stdout]     |
[INFO] [stdout] 871 |         for mut pointer_table in self.fn_pointer_tables {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 871 |         while let Some(mut pointer_table) = self.fn_pointer_tables {
[INFO] [stdout]     |         ~~~~~~~~~~~~~~~                 ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 871 |         if let Some(mut pointer_table) = self.fn_pointer_tables {
[INFO] [stdout]     |         ~~~~~~~~~~~~                 ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 255 |         drop(table);
[INFO] [stdout]     |         ^^^^^-----^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&TableType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:500:9
[INFO] [stdout]     |
[INFO] [stdout] 500 |         drop(t);
[INFO] [stdout]     |         ^^^^^-^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&mut parity_wasm::elements::ValueType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:539:13
[INFO] [stdout]     |
[INFO] [stdout] 539 |             drop(t); // TODO
[INFO] [stdout]     |             ^^^^^-^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `&mut TableType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:547:13
[INFO] [stdout]     |
[INFO] [stdout] 547 |             drop(m); // TODO
[INFO] [stdout]     |             ^^^^^-^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `&mut parity_wasm::elements::MemoryType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:566:9
[INFO] [stdout]     |
[INFO] [stdout] 566 |         drop(s);
[INFO] [stdout]     |         ^^^^^-^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&mut parity_wasm::elements::GlobalType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `test` is never read
[INFO] [stdout]    --> src/lib.rs:272:5
[INFO] [stdout]     |
[INFO] [stdout] 260 | struct Target {
[INFO] [stdout]     |        ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 272 |     test: Option<String>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Target` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Bench` is never constructed
[INFO] [stdout]   --> src/cargo_shim/mod.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub enum Profile {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 37 |     Bench
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Profile` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `default_package` and `used_packages` are never used
[INFO] [stdout]    --> src/cargo_shim/mod.rs:448:12
[INFO] [stdout]     |
[INFO] [stdout] 274 | impl CargoProject {
[INFO] [stdout]     | ----------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 448 |     pub fn default_package( &self ) -> Option< &CargoPackage > {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 452 |     pub fn used_packages( &self, triplet: &str, main_package: &CargoPackage, profile: Profile ) -> Vec< &CargoPackage > {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/wasm_gc.rs:176:14
[INFO] [stdout]     |
[INFO] [stdout] 176 |     Imported(&'a MemoryType),
[INFO] [stdout]     |     -------- ^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 176 |     Imported(()),
[INFO] [stdout]     |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/package.rs:104:35
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err( err ) => panic!( err )
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err( err ) => panic!( "{}", err )
[INFO] [stdout]     |                                   +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err( err ) => std::panic::panic_any( err )
[INFO] [stdout]     |                           ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/wasm_context.rs:871:34
[INFO] [stdout]     |
[INFO] [stdout] 871 |         for mut pointer_table in self.fn_pointer_tables {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 871 |         while let Some(mut pointer_table) = self.fn_pointer_tables {
[INFO] [stdout]     |         ~~~~~~~~~~~~~~~                 ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 871 |         if let Some(mut pointer_table) = self.fn_pointer_tables {
[INFO] [stdout]     |         ~~~~~~~~~~~~                 ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 255 |         drop(table);
[INFO] [stdout]     |         ^^^^^-----^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&TableType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:500:9
[INFO] [stdout]     |
[INFO] [stdout] 500 |         drop(t);
[INFO] [stdout]     |         ^^^^^-^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&mut parity_wasm::elements::ValueType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:539:13
[INFO] [stdout]     |
[INFO] [stdout] 539 |             drop(t); // TODO
[INFO] [stdout]     |             ^^^^^-^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `&mut TableType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:547:13
[INFO] [stdout]     |
[INFO] [stdout] 547 |             drop(m); // TODO
[INFO] [stdout]     |             ^^^^^-^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `&mut parity_wasm::elements::MemoryType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/wasm_gc.rs:566:9
[INFO] [stdout]     |
[INFO] [stdout] 566 |         drop(s);
[INFO] [stdout]     |         ^^^^^-^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&mut parity_wasm::elements::GlobalType`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.29s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9, traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "ba4b562f3cc1252469df34ef0a3fcff2c777973de35330139cc6d6920bf03a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba4b562f3cc1252469df34ef0a3fcff2c777973de35330139cc6d6920bf03a67", kill_on_drop: false }`
[INFO] [stdout] ba4b562f3cc1252469df34ef0a3fcff2c777973de35330139cc6d6920bf03a67
