[INFO] fetching crate iostream 0.1.3...
[INFO] building iostream-0.1.3 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate iostream 0.1.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate iostream 0.1.3 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iostream 0.1.3
[INFO] finished tweaking crates.io crate iostream 0.1.3
[INFO] tweaked toml for crates.io crate iostream 0.1.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79e90f028c819e7b22726408aac233fea8ea06509e6a8ae9553988e06da3d3f9
[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" "79e90f028c819e7b22726408aac233fea8ea06509e6a8ae9553988e06da3d3f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79e90f028c819e7b22726408aac233fea8ea06509e6a8ae9553988e06da3d3f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79e90f028c819e7b22726408aac233fea8ea06509e6a8ae9553988e06da3d3f9", kill_on_drop: false }`
[INFO] [stdout] 79e90f028c819e7b22726408aac233fea8ea06509e6a8ae9553988e06da3d3f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--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] 5abef491e4c14d35481dc45f2ddd8cda72946800d5784fad3eeea18b8213b09c
[INFO] running `Command { std: "docker" "start" "-a" "5abef491e4c14d35481dc45f2ddd8cda72946800d5784fad3eeea18b8213b09c", kill_on_drop: false }`
[INFO] [stderr]    Compiling iostream v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/io/stream_rw/stream_reader.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub base_stream: &'a mut Stream,
[INFO] [stdout]   |                              ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_reader.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn from(stream: &'a mut Stream) -> Result<StreamReader<'a>, String> {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_reader.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn from_big_endian(stream: &'a mut Stream) -> Result<StreamReader<'a>, String> {
[INFO] [stdout]    |                                            ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/io/stream_rw/stream_writer.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub base_stream: &'a mut Stream,
[INFO] [stdout]   |                              ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_writer.rs:20:33
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn from(stream: &'a mut Stream) -> Result<StreamWriter<'a>, String> {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_writer.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn from_big_endian(stream: &'a mut Stream) -> Result<StreamWriter<'a>, String> {
[INFO] [stdout]    |                                            ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/mod.rs:44:40
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn copy_to(&mut self, target: &mut Stream) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                        ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:50:32
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:47:23
[INFO] [stdout]    |
[INFO] [stdout] 47 |         self.err_type.description()
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:98:20
[INFO] [stdout]     |
[INFO] [stdout] 98  |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 99  | |                 "read length error for i16,need length 2,read length {}",
[INFO] [stdout] 100 | |                 r
[INFO] [stdout] 101 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 98  |             panic!(
[INFO] [stdout] 99  |                 "read length error for i16,need length 2,read length {}",
[INFO] [stdout] 100 |                 r
[INFO] [stdout] 101 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:120:20
[INFO] [stdout]     |
[INFO] [stdout] 120 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 121 | |                 "read length error for u16,need length 2,read length {}",
[INFO] [stdout] 122 | |                 r
[INFO] [stdout] 123 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 120 |             panic!(
[INFO] [stdout] 121 |                 "read length error for u16,need length 2,read length {}",
[INFO] [stdout] 122 |                 r
[INFO] [stdout] 123 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:145:20
[INFO] [stdout]     |
[INFO] [stdout] 145 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 146 | |                 "read length error for u32,need length 4,read length {}",
[INFO] [stdout] 147 | |                 r
[INFO] [stdout] 148 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 145 |             panic!(
[INFO] [stdout] 146 |                 "read length error for u32,need length 4,read length {}",
[INFO] [stdout] 147 |                 r
[INFO] [stdout] 148 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:170:20
[INFO] [stdout]     |
[INFO] [stdout] 170 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 171 | |                 "read length error for i32,need length 4,read length {}",
[INFO] [stdout] 172 | |                 r
[INFO] [stdout] 173 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 170 |             panic!(
[INFO] [stdout] 171 |                 "read length error for i32,need length 4,read length {}",
[INFO] [stdout] 172 |                 r
[INFO] [stdout] 173 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:195:20
[INFO] [stdout]     |
[INFO] [stdout] 195 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 196 | |                 "read length error for i64,need length 8,read length {}",
[INFO] [stdout] 197 | |                 r
[INFO] [stdout] 198 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 195 |             panic!(
[INFO] [stdout] 196 |                 "read length error for i64,need length 8,read length {}",
[INFO] [stdout] 197 |                 r
[INFO] [stdout] 198 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:220:20
[INFO] [stdout]     |
[INFO] [stdout] 220 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 221 | |                 "read length error for u64,need length 8,read length {}",
[INFO] [stdout] 222 | |                 r
[INFO] [stdout] 223 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 220 |             panic!(
[INFO] [stdout] 221 |                 "read length error for u64,need length 8,read length {}",
[INFO] [stdout] 222 |                 r
[INFO] [stdout] 223 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:240:20
[INFO] [stdout]     |
[INFO] [stdout] 240 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 241 | |                 "read length error for f32,need length 4,read length {}",
[INFO] [stdout] 242 | |                 r
[INFO] [stdout] 243 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 240 |             panic!(
[INFO] [stdout] 241 |                 "read length error for f32,need length 4,read length {}",
[INFO] [stdout] 242 |                 r
[INFO] [stdout] 243 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 261 | |                 "read length error for f64,need length 8,read length {}",
[INFO] [stdout] 262 | |                 r
[INFO] [stdout] 263 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 260 |             panic!(
[INFO] [stdout] 261 |                 "read length error for f64,need length 8,read length {}",
[INFO] [stdout] 262 |                 r
[INFO] [stdout] 263 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "5abef491e4c14d35481dc45f2ddd8cda72946800d5784fad3eeea18b8213b09c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5abef491e4c14d35481dc45f2ddd8cda72946800d5784fad3eeea18b8213b09c", kill_on_drop: false }`
[INFO] [stdout] 5abef491e4c14d35481dc45f2ddd8cda72946800d5784fad3eeea18b8213b09c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f90b006675064324d836cc22d72189dc0d1702c07243fa50b0c531282f1ad3f
[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" "5f90b006675064324d836cc22d72189dc0d1702c07243fa50b0c531282f1ad3f", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/io/stream_rw/stream_reader.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub base_stream: &'a mut Stream,
[INFO] [stdout]   |                              ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling iostream v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_reader.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn from(stream: &'a mut Stream) -> Result<StreamReader<'a>, String> {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_reader.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn from_big_endian(stream: &'a mut Stream) -> Result<StreamReader<'a>, String> {
[INFO] [stdout]    |                                            ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/io/stream_rw/stream_writer.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub base_stream: &'a mut Stream,
[INFO] [stdout]   |                              ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_writer.rs:20:33
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn from(stream: &'a mut Stream) -> Result<StreamWriter<'a>, String> {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_writer.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn from_big_endian(stream: &'a mut Stream) -> Result<StreamWriter<'a>, String> {
[INFO] [stdout]    |                                            ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/mod.rs:44:40
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn copy_to(&mut self, target: &mut Stream) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                        ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:50:32
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:47:23
[INFO] [stdout]    |
[INFO] [stdout] 47 |         self.err_type.description()
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:98:20
[INFO] [stdout]     |
[INFO] [stdout] 98  |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 99  | |                 "read length error for i16,need length 2,read length {}",
[INFO] [stdout] 100 | |                 r
[INFO] [stdout] 101 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 98  |             panic!(
[INFO] [stdout] 99  |                 "read length error for i16,need length 2,read length {}",
[INFO] [stdout] 100 |                 r
[INFO] [stdout] 101 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:120:20
[INFO] [stdout]     |
[INFO] [stdout] 120 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 121 | |                 "read length error for u16,need length 2,read length {}",
[INFO] [stdout] 122 | |                 r
[INFO] [stdout] 123 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 120 |             panic!(
[INFO] [stdout] 121 |                 "read length error for u16,need length 2,read length {}",
[INFO] [stdout] 122 |                 r
[INFO] [stdout] 123 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:145:20
[INFO] [stdout]     |
[INFO] [stdout] 145 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 146 | |                 "read length error for u32,need length 4,read length {}",
[INFO] [stdout] 147 | |                 r
[INFO] [stdout] 148 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 145 |             panic!(
[INFO] [stdout] 146 |                 "read length error for u32,need length 4,read length {}",
[INFO] [stdout] 147 |                 r
[INFO] [stdout] 148 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:170:20
[INFO] [stdout]     |
[INFO] [stdout] 170 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 171 | |                 "read length error for i32,need length 4,read length {}",
[INFO] [stdout] 172 | |                 r
[INFO] [stdout] 173 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 170 |             panic!(
[INFO] [stdout] 171 |                 "read length error for i32,need length 4,read length {}",
[INFO] [stdout] 172 |                 r
[INFO] [stdout] 173 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:195:20
[INFO] [stdout]     |
[INFO] [stdout] 195 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 196 | |                 "read length error for i64,need length 8,read length {}",
[INFO] [stdout] 197 | |                 r
[INFO] [stdout] 198 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 195 |             panic!(
[INFO] [stdout] 196 |                 "read length error for i64,need length 8,read length {}",
[INFO] [stdout] 197 |                 r
[INFO] [stdout] 198 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:220:20
[INFO] [stdout]     |
[INFO] [stdout] 220 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 221 | |                 "read length error for u64,need length 8,read length {}",
[INFO] [stdout] 222 | |                 r
[INFO] [stdout] 223 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 220 |             panic!(
[INFO] [stdout] 221 |                 "read length error for u64,need length 8,read length {}",
[INFO] [stdout] 222 |                 r
[INFO] [stdout] 223 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:240:20
[INFO] [stdout]     |
[INFO] [stdout] 240 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 241 | |                 "read length error for f32,need length 4,read length {}",
[INFO] [stdout] 242 | |                 r
[INFO] [stdout] 243 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 240 |             panic!(
[INFO] [stdout] 241 |                 "read length error for f32,need length 4,read length {}",
[INFO] [stdout] 242 |                 r
[INFO] [stdout] 243 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 261 | |                 "read length error for f64,need length 8,read length {}",
[INFO] [stdout] 262 | |                 r
[INFO] [stdout] 263 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 260 |             panic!(
[INFO] [stdout] 261 |                 "read length error for f64,need length 8,read length {}",
[INFO] [stdout] 262 |                 r
[INFO] [stdout] 263 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/io/stream_rw/stream_reader.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub base_stream: &'a mut Stream,
[INFO] [stdout]   |                              ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_reader.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn from(stream: &'a mut Stream) -> Result<StreamReader<'a>, String> {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_reader.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn from_big_endian(stream: &'a mut Stream) -> Result<StreamReader<'a>, String> {
[INFO] [stdout]    |                                            ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/io/stream_rw/stream_writer.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub base_stream: &'a mut Stream,
[INFO] [stdout]   |                              ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_writer.rs:20:33
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn from(stream: &'a mut Stream) -> Result<StreamWriter<'a>, String> {
[INFO] [stdout]    |                                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/stream_rw/stream_writer.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn from_big_endian(stream: &'a mut Stream) -> Result<StreamWriter<'a>, String> {
[INFO] [stdout]    |                                            ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/mod.rs:44:40
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn copy_to(&mut self, target: &mut Stream) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                        ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:50:32
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:47:23
[INFO] [stdout]    |
[INFO] [stdout] 47 |         self.err_type.description()
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:98:20
[INFO] [stdout]     |
[INFO] [stdout] 98  |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 99  | |                 "read length error for i16,need length 2,read length {}",
[INFO] [stdout] 100 | |                 r
[INFO] [stdout] 101 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 98  |             panic!(
[INFO] [stdout] 99  |                 "read length error for i16,need length 2,read length {}",
[INFO] [stdout] 100 |                 r
[INFO] [stdout] 101 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:120:20
[INFO] [stdout]     |
[INFO] [stdout] 120 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 121 | |                 "read length error for u16,need length 2,read length {}",
[INFO] [stdout] 122 | |                 r
[INFO] [stdout] 123 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 120 |             panic!(
[INFO] [stdout] 121 |                 "read length error for u16,need length 2,read length {}",
[INFO] [stdout] 122 |                 r
[INFO] [stdout] 123 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:145:20
[INFO] [stdout]     |
[INFO] [stdout] 145 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 146 | |                 "read length error for u32,need length 4,read length {}",
[INFO] [stdout] 147 | |                 r
[INFO] [stdout] 148 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 145 |             panic!(
[INFO] [stdout] 146 |                 "read length error for u32,need length 4,read length {}",
[INFO] [stdout] 147 |                 r
[INFO] [stdout] 148 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:170:20
[INFO] [stdout]     |
[INFO] [stdout] 170 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 171 | |                 "read length error for i32,need length 4,read length {}",
[INFO] [stdout] 172 | |                 r
[INFO] [stdout] 173 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 170 |             panic!(
[INFO] [stdout] 171 |                 "read length error for i32,need length 4,read length {}",
[INFO] [stdout] 172 |                 r
[INFO] [stdout] 173 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:195:20
[INFO] [stdout]     |
[INFO] [stdout] 195 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 196 | |                 "read length error for i64,need length 8,read length {}",
[INFO] [stdout] 197 | |                 r
[INFO] [stdout] 198 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 195 |             panic!(
[INFO] [stdout] 196 |                 "read length error for i64,need length 8,read length {}",
[INFO] [stdout] 197 |                 r
[INFO] [stdout] 198 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:220:20
[INFO] [stdout]     |
[INFO] [stdout] 220 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 221 | |                 "read length error for u64,need length 8,read length {}",
[INFO] [stdout] 222 | |                 r
[INFO] [stdout] 223 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 220 |             panic!(
[INFO] [stdout] 221 |                 "read length error for u64,need length 8,read length {}",
[INFO] [stdout] 222 |                 r
[INFO] [stdout] 223 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:240:20
[INFO] [stdout]     |
[INFO] [stdout] 240 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 241 | |                 "read length error for f32,need length 4,read length {}",
[INFO] [stdout] 242 | |                 r
[INFO] [stdout] 243 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 240 |             panic!(
[INFO] [stdout] 241 |                 "read length error for f32,need length 4,read length {}",
[INFO] [stdout] 242 |                 r
[INFO] [stdout] 243 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/io/stream_rw/stream_reader.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 261 | |                 "read length error for f64,need length 8,read length {}",
[INFO] [stdout] 262 | |                 r
[INFO] [stdout] 263 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 260 |             panic!(
[INFO] [stdout] 261 |                 "read length error for f64,need length 8,read length {}",
[INFO] [stdout] 262 |                 r
[INFO] [stdout] 263 |             )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 |             panic!(format!("{}", i))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 15 |             panic!("{}", i)
[INFO] [stdout]    |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |             panic!(format!("{}", i))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 21 |             panic!("{}", i)
[INFO] [stdout]    |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:27:20
[INFO] [stdout]    |
[INFO] [stdout] 27 |             panic!(format!("{}", i))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 27 |             panic!("{}", i)
[INFO] [stdout]    |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:33:20
[INFO] [stdout]    |
[INFO] [stdout] 33 |             panic!(format!("{}", i))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 33 |             panic!("{}", i)
[INFO] [stdout]    |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:46:20
[INFO] [stdout]    |
[INFO] [stdout] 46 |             panic!(format!("{}", i))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 46 |             panic!("{}", i)
[INFO] [stdout]    |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:57:20
[INFO] [stdout]    |
[INFO] [stdout] 57 |             panic!(format!("{}", i))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 57 |             panic!("{}", i)
[INFO] [stdout]    |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |         panic!(format!("{}", i))
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 68 |         panic!("{}", i)
[INFO] [stdout]    |               --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 72 |         panic!(format!("{}", i))
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 72 |         panic!("{}", i)
[INFO] [stdout]    |               --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |             panic!(format!("{}", i))
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 78 |             panic!("{}", i)
[INFO] [stdout]    |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:84:16
[INFO] [stdout]    |
[INFO] [stdout] 84 |         panic!(format!("{}", i))
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 84 |         panic!("{}", i)
[INFO] [stdout]    |               --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:89:16
[INFO] [stdout]    |
[INFO] [stdout] 89 |         panic!(format!("{}", i))
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 89 |         panic!("{}", i)
[INFO] [stdout]    |               --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/filetest/test_new_filestream.rs:93:16
[INFO] [stdout]    |
[INFO] [stdout] 93 |         panic!(format!("{}", i))
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 93 |         panic!("{}", i)
[INFO] [stdout]    |               --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:104:16
[INFO] [stdout]     |
[INFO] [stdout] 104 |         panic!(format!("{}", i))
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 104 |         panic!("{}", i)
[INFO] [stdout]     |               --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:113:20
[INFO] [stdout]     |
[INFO] [stdout] 113 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 113 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:119:20
[INFO] [stdout]     |
[INFO] [stdout] 119 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 119 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:125:20
[INFO] [stdout]     |
[INFO] [stdout] 125 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 125 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:138:20
[INFO] [stdout]     |
[INFO] [stdout] 138 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 138 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:145:20
[INFO] [stdout]     |
[INFO] [stdout] 145 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 145 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:155:20
[INFO] [stdout]     |
[INFO] [stdout] 155 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 155 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:162:20
[INFO] [stdout]     |
[INFO] [stdout] 162 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 162 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:169:20
[INFO] [stdout]     |
[INFO] [stdout] 169 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 169 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:182:20
[INFO] [stdout]     |
[INFO] [stdout] 182 |             panic!(format!("{}", i))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 182 |             panic!("{}", i)
[INFO] [stdout]     |                   --     --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/filetest/test_new_filestream.rs:192:20
[INFO] [stdout]     |
[INFO] [stdout] 192 |             panic!(errmsg);
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 192 |             panic!("{}", errmsg);
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 192 |             std::panic::panic_any(errmsg);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `Command { std: "docker" "inspect" "5f90b006675064324d836cc22d72189dc0d1702c07243fa50b0c531282f1ad3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f90b006675064324d836cc22d72189dc0d1702c07243fa50b0c531282f1ad3f", kill_on_drop: false }`
[INFO] [stdout] 5f90b006675064324d836cc22d72189dc0d1702c07243fa50b0c531282f1ad3f
