[INFO] fetching crate awis-rs 0.1.1...
[INFO] checking awis-rs-0.1.1 against try#8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f for pr-114559
[INFO] extracting crate awis-rs 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate awis-rs 0.1.1 on toolchain 8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate awis-rs 0.1.1
[INFO] finished tweaking crates.io crate awis-rs 0.1.1
[INFO] tweaked toml for crates.io crate awis-rs 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a1a589cceb90b3cd5fccc886374efe90fc17fc2dc15226091f58798eb607df7
[INFO] running `Command { std: "docker" "start" "-a" "4a1a589cceb90b3cd5fccc886374efe90fc17fc2dc15226091f58798eb607df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a1a589cceb90b3cd5fccc886374efe90fc17fc2dc15226091f58798eb607df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a1a589cceb90b3cd5fccc886374efe90fc17fc2dc15226091f58798eb607df7", kill_on_drop: false }`
[INFO] [stdout] 4a1a589cceb90b3cd5fccc886374efe90fc17fc2dc15226091f58798eb607df7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 112cdea41d799a6d880de6cc77fe6388db6fb90713aea1bb389424022bf42bae
[INFO] running `Command { std: "docker" "start" "-a" "112cdea41d799a6d880de6cc77fe6388db6fb90713aea1bb389424022bf42bae", kill_on_drop: false }`
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking chrono v0.4.26
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking openssl v0.10.56
[INFO] [stderr]     Checking native-tls v0.2.11
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking awis-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:26:93
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn url_info(&self, response_group: &str, url: &str) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 26 |     pub fn url_info(&self, response_group: &str, url: &str) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:26:93
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn url_info(&self, response_group: &str, url: &str) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 26 |     pub fn url_info(&self, response_group: &str, url: &str) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:35:118
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn traffic_history(&self, range: Option<i8>, start: Option<&str>, url: &str) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                                                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 35 |     pub fn traffic_history(&self, range: Option<i8>, start: Option<&str>, url: &str) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:35:118
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn traffic_history(&self, range: Option<i8>, start: Option<&str>, url: &str) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                                                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 35 |     pub fn traffic_history(&self, range: Option<i8>, start: Option<&str>, url: &str) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:45:129
[INFO] [stdout]    |
[INFO] [stdout] 45 | ... &str, response_group: &str) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 45 |     pub fn category_browse(&self, descriptions: Option<bool>, path: &str, response_group: &str) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:45:129
[INFO] [stdout]    |
[INFO] [stdout] 45 | ... &str, response_group: &str) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 45 |     pub fn category_browse(&self, descriptions: Option<bool>, path: &str, response_group: &str) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:60:130
[INFO] [stdout]    |
[INFO] [stdout] 60 | ...                   recursive: Option<bool>, sort_by: Option<&str>, start: Option<i32>) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                                                           ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 60 |                              recursive: Option<bool>, sort_by: Option<&str>, start: Option<i32>) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:60:130
[INFO] [stdout]    |
[INFO] [stdout] 60 | ...                   recursive: Option<bool>, sort_by: Option<&str>, start: Option<i32>) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                                                           ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 60 |                              recursive: Option<bool>, sort_by: Option<&str>, start: Option<i32>) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:75:118
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn sites_linking_in(&self, count: Option<i8>, start: Option<i32>, url: &str) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                                                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 |     pub fn sites_linking_in(&self, count: Option<i8>, start: Option<i32>, url: &str) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:75:118
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn sites_linking_in(&self, count: Option<i8>, start: Option<i32>, url: &str) -> Result<reqwest::Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                                                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 |     pub fn sites_linking_in(&self, count: Option<i8>, start: Option<i32>, url: &str) -> Result<reqwest::Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/request.rs:29:104
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn new(access_key_id: &str, secret_access_key: &str, canonical_query: &str) -> Result<Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                                        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 29 | pub fn new(access_key_id: &str, secret_access_key: &str, canonical_query: &str) -> Result<Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/request.rs:29:104
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn new(access_key_id: &str, secret_access_key: &str, canonical_query: &str) -> Result<Request, Box<error::Error>> {
[INFO] [stdout]    |                                                                                                        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 29 | pub fn new(access_key_id: &str, secret_access_key: &str, canonical_query: &str) -> Result<Request, Box<dyn error::Error>> {
[INFO] [stdout]    |                                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/request.rs:13:33
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ($($tt:tt)*) => { Err(Box::<error::Error>::from(format!($($tt)*))) }
[INFO] [stdout]    |                                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |             return err!("invalid response group {}", response_group);
[INFO] [stdout]    |                    ------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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: this warning originates in the macro `err` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ($($tt:tt)*) => { Err(Box::<dyn error::Error>::from(format!($($tt)*))) }
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/request.rs:13:33
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ($($tt:tt)*) => { Err(Box::<error::Error>::from(format!($($tt)*))) }
[INFO] [stdout]    |                                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |             return err!("invalid response group {}", response_group);
[INFO] [stdout]    |                    ------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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: this warning originates in the macro `err` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ($($tt:tt)*) => { Err(Box::<dyn error::Error>::from(format!($($tt)*))) }
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/request.rs:13:33
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ($($tt:tt)*) => { Err(Box::<error::Error>::from(format!($($tt)*))) }
[INFO] [stdout]    |                                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |             return err!("invalid response group {}", response_group);
[INFO] [stdout]    |                    ------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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: this warning originates in the macro `err` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ($($tt:tt)*) => { Err(Box::<dyn error::Error>::from(format!($($tt)*))) }
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/request.rs:13:33
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ($($tt:tt)*) => { Err(Box::<error::Error>::from(format!($($tt)*))) }
[INFO] [stdout]    |                                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |             return err!("invalid response group {}", response_group);
[INFO] [stdout]    |                    ------------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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: this warning originates in the macro `err` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 |     ($($tt:tt)*) => { Err(Box::<dyn error::Error>::from(format!($($tt)*))) }
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.01s
[INFO] running `Command { std: "docker" "inspect" "112cdea41d799a6d880de6cc77fe6388db6fb90713aea1bb389424022bf42bae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "112cdea41d799a6d880de6cc77fe6388db6fb90713aea1bb389424022bf42bae", kill_on_drop: false }`
[INFO] [stdout] 112cdea41d799a6d880de6cc77fe6388db6fb90713aea1bb389424022bf42bae
