[INFO] crate binjs_io 0.2.1 is already in cache
[INFO] extracting crate binjs_io 0.2.1 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/binjs_io/0.2.1
[INFO] extracting crate binjs_io 0.2.1 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/binjs_io/0.2.1
[INFO] validating manifest of binjs_io-0.2.1 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of binjs_io-0.2.1 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing binjs_io-0.2.1
[INFO] finished frobbing binjs_io-0.2.1
[INFO] frobbed toml for binjs_io-0.2.1 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/binjs_io/0.2.1/Cargo.toml
[INFO] started frobbing binjs_io-0.2.1
[INFO] finished frobbing binjs_io-0.2.1
[INFO] frobbed toml for binjs_io-0.2.1 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/binjs_io/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking binjs_io-0.2.1 against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-1/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/binjs_io/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 507aed54b7c3d0f0cea87714d3c420da4bda1a2af472dc0633737cd45ecbb518
[INFO] running `"docker" "start" "-a" "507aed54b7c3d0f0cea87714d3c420da4bda1a2af472dc0633737cd45ecbb518"`
[INFO] [stderr]     Checking range-encoding v0.1.9
[INFO] [stderr]    Compiling derive_more v0.13.0
[INFO] [stderr]     Checking binjs_shared v0.1.1
[INFO] [stderr]     Checking binjs_io v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `flate2` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:121:21
[INFO] [stderr]     |
[INFO] [stderr] 121 |                 use flate2;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:11:1
[INFO] [stderr]     |
[INFO] [stderr] 11  | extern crate flate2;
[INFO] [stderr]     | -------------------- the item `flate2` is already imported here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `flate2` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:134:21
[INFO] [stderr]     |
[INFO] [stderr] 134 |                 use flate2;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:11:1
[INFO] [stderr]     |
[INFO] [stderr] 11  | extern crate flate2;
[INFO] [stderr]     | -------------------- the item `flate2` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `brotli` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:147:21
[INFO] [stderr]     |
[INFO] [stderr] 147 |                 use brotli;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:7:1
[INFO] [stderr]     |
[INFO] [stderr] 7   | extern crate brotli;
[INFO] [stderr]     | -------------------- the item `brotli` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `lzw` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:161:21
[INFO] [stderr]     |
[INFO] [stderr] 161 |                 use lzw;
[INFO] [stderr]     |                     ^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:13:1
[INFO] [stderr]     |
[INFO] [stderr] 13  | extern crate lzw;
[INFO] [stderr]     | ----------------- the item `lzw` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `flate2` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:229:21
[INFO] [stderr]     |
[INFO] [stderr] 229 |                 use flate2;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:11:1
[INFO] [stderr]     |
[INFO] [stderr] 11  | extern crate flate2;
[INFO] [stderr]     | -------------------- the item `flate2` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `flate2` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:236:21
[INFO] [stderr]     |
[INFO] [stderr] 236 |                 use flate2;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:11:1
[INFO] [stderr]     |
[INFO] [stderr] 11  | extern crate flate2;
[INFO] [stderr]     | -------------------- the item `flate2` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `brotli` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:243:21
[INFO] [stderr]     |
[INFO] [stderr] 243 |                 use brotli;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:7:1
[INFO] [stderr]     |
[INFO] [stderr] 7   | extern crate brotli;
[INFO] [stderr]     | -------------------- the item `brotli` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `lzw` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:250:21
[INFO] [stderr]     |
[INFO] [stderr] 250 |                 use lzw;
[INFO] [stderr]     |                     ^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:13:1
[INFO] [stderr]     |
[INFO] [stderr] 13  | extern crate lzw;
[INFO] [stderr]     | ----------------- the item `lzw` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io/mod.rs:404:41
[INFO] [stderr]     |
[INFO] [stderr] 404 |     fn make<W>(&self, writer: W) -> Box<RootedTokenSerializer<W, T>> where W: TokenWriter;
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RootedTokenSerializer<W, T>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Statistics` is imported redundantly
[INFO] [stderr]    --> src/multipart/mod.rs:166:26
[INFO] [stderr]     |
[INFO] [stderr] 143 | pub use self::write::{ Statistics, TreeTokenWriter, Targets };
[INFO] [stderr]     |                        ---------- the item `Statistics` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 166 |         use multipart::{ Statistics, Targets };
[INFO] [stderr]     |                          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Targets` is imported redundantly
[INFO] [stderr]    --> src/multipart/mod.rs:166:38
[INFO] [stderr]     |
[INFO] [stderr] 143 | pub use self::write::{ Statistics, TreeTokenWriter, Targets };
[INFO] [stderr]     |                                                     ------- the item `Targets` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 166 |         use multipart::{ Statistics, Targets };
[INFO] [stderr]     |                                      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `bincode` is imported redundantly
[INFO] [stderr]    --> src/entropy/mod.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         use bincode;
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:4:1
[INFO] [stderr]     |
[INFO] [stderr] 4   | extern crate bincode; // Used to store dictionaries. This is a temporary format.
[INFO] [stderr]     | --------------------- the item `bincode` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 |         0...9 => b'0' + n,
[INFO] [stderr]    |          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         0xa...0xf => b'A' + (n - 10),
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         b'0'...b'9' => (n - b'0') as u16,
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |         b'A'...b'F' => (n - b'A' + 10) as u16,
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |         b'a'...b'f' => (n - b'a' + 10) as u16,
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:221:49
[INFO] [stderr]     |
[INFO] [stderr] 221 |             Rc::new(|_| Format::simple()) as Rc<Fn(&'a mut R) -> Format>,
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&'a mut R) -> Format`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:238:23
[INFO] [stderr]     |
[INFO] [stderr] 238 |         let pick : Rc<Fn(&'a mut R) -> Format> = generators.choose(rng)
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&'a mut R) -> Format`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:309:32
[INFO] [stderr]     |
[INFO] [stderr] 309 |    fn providers() -> [&'static FormatProvider; 4] {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FormatProvider`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:320:39
[INFO] [stderr]     |
[INFO] [stderr] 320 |     fn default_provider() -> &'static FormatProvider {
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FormatProvider`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `flate2` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:121:21
[INFO] [stderr]     |
[INFO] [stderr] 121 |                 use flate2;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:11:1
[INFO] [stderr]     |
[INFO] [stderr] 11  | extern crate flate2;
[INFO] [stderr]     | -------------------- the item `flate2` is already imported here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `flate2` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:134:21
[INFO] [stderr]     |
[INFO] [stderr] 134 |                 use flate2;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:11:1
[INFO] [stderr]     |
[INFO] [stderr] 11  | extern crate flate2;
[INFO] [stderr]     | -------------------- the item `flate2` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `brotli` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:147:21
[INFO] [stderr]     |
[INFO] [stderr] 147 |                 use brotli;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:7:1
[INFO] [stderr]     |
[INFO] [stderr] 7   | extern crate brotli;
[INFO] [stderr]     | -------------------- the item `brotli` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `lzw` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:161:21
[INFO] [stderr]     |
[INFO] [stderr] 161 |                 use lzw;
[INFO] [stderr]     |                     ^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:13:1
[INFO] [stderr]     |
[INFO] [stderr] 13  | extern crate lzw;
[INFO] [stderr]     | ----------------- the item `lzw` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `flate2` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:229:21
[INFO] [stderr]     |
[INFO] [stderr] 229 |                 use flate2;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:11:1
[INFO] [stderr]     |
[INFO] [stderr] 11  | extern crate flate2;
[INFO] [stderr]     | -------------------- the item `flate2` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `flate2` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:236:21
[INFO] [stderr]     |
[INFO] [stderr] 236 |                 use flate2;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:11:1
[INFO] [stderr]     |
[INFO] [stderr] 11  | extern crate flate2;
[INFO] [stderr]     | -------------------- the item `flate2` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `brotli` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:243:21
[INFO] [stderr]     |
[INFO] [stderr] 243 |                 use brotli;
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:7:1
[INFO] [stderr]     |
[INFO] [stderr] 7   | extern crate brotli;
[INFO] [stderr]     | -------------------- the item `brotli` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: the item `lzw` is imported redundantly
[INFO] [stderr]    --> src/bytes/compress.rs:250:21
[INFO] [stderr]     |
[INFO] [stderr] 250 |                 use lzw;
[INFO] [stderr]     |                     ^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:13:1
[INFO] [stderr]     |
[INFO] [stderr] 13  | extern crate lzw;
[INFO] [stderr]     | ----------------- the item `lzw` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io/mod.rs:404:41
[INFO] [stderr]     |
[INFO] [stderr] 404 |     fn make<W>(&self, writer: W) -> Box<RootedTokenSerializer<W, T>> where W: TokenWriter;
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RootedTokenSerializer<W, T>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Statistics` is imported redundantly
[INFO] [stderr]    --> src/multipart/mod.rs:166:26
[INFO] [stderr]     |
[INFO] [stderr] 143 | pub use self::write::{ Statistics, TreeTokenWriter, Targets };
[INFO] [stderr]     |                        ---------- the item `Statistics` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 166 |         use multipart::{ Statistics, Targets };
[INFO] [stderr]     |                          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Targets` is imported redundantly
[INFO] [stderr]    --> src/multipart/mod.rs:166:38
[INFO] [stderr]     |
[INFO] [stderr] 143 | pub use self::write::{ Statistics, TreeTokenWriter, Targets };
[INFO] [stderr]     |                                                     ------- the item `Targets` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 166 |         use multipart::{ Statistics, Targets };
[INFO] [stderr]     |                                      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `bincode` is imported redundantly
[INFO] [stderr]    --> src/entropy/mod.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         use bincode;
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/lib.rs:4:1
[INFO] [stderr]     |
[INFO] [stderr] 4   | extern crate bincode; // Used to store dictionaries. This is a temporary format.
[INFO] [stderr]     | --------------------- the item `bincode` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 |         0...9 => b'0' + n,
[INFO] [stderr]    |          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         0xa...0xf => b'A' + (n - 10),
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         b'0'...b'9' => (n - b'0') as u16,
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |         b'A'...b'F' => (n - b'A' + 10) as u16,
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/escaped_wtf8.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |         b'a'...b'f' => (n - b'a' + 10) as u16,
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:221:49
[INFO] [stderr]     |
[INFO] [stderr] 221 |             Rc::new(|_| Format::simple()) as Rc<Fn(&'a mut R) -> Format>,
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&'a mut R) -> Format`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:238:23
[INFO] [stderr]     |
[INFO] [stderr] 238 |         let pick : Rc<Fn(&'a mut R) -> Format> = generators.choose(rng)
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&'a mut R) -> Format`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:309:32
[INFO] [stderr]     |
[INFO] [stderr] 309 |    fn providers() -> [&'static FormatProvider; 4] {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FormatProvider`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:320:39
[INFO] [stderr]     |
[INFO] [stderr] 320 |     fn default_provider() -> &'static FormatProvider {
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn FormatProvider`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/multipart/mod.rs:226:13
[INFO] [stderr]     |
[INFO] [stderr] 226 |         let mut path = Path::new();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.95s
[INFO] running `"docker" "inspect" "507aed54b7c3d0f0cea87714d3c420da4bda1a2af472dc0633737cd45ecbb518"`
[INFO] running `"docker" "rm" "-f" "507aed54b7c3d0f0cea87714d3c420da4bda1a2af472dc0633737cd45ecbb518"`
[INFO] [stdout] 507aed54b7c3d0f0cea87714d3c420da4bda1a2af472dc0633737cd45ecbb518