[INFO] cloning repository https://github.com/Kylebrown9/Slang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kylebrown9/Slang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKylebrown9%2FSlang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKylebrown9%2FSlang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd446e019b457da64bd383db3ea2f9df2b0ee1cd
[INFO] testing Kylebrown9/Slang against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKylebrown9%2FSlang" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kylebrown9/Slang on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kylebrown9/Slang
[INFO] finished tweaking git repo https://github.com/Kylebrown9/Slang
[INFO] tweaked toml for git repo https://github.com/Kylebrown9/Slang written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Kylebrown9/Slang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 469b8790d233396231ae8da239d5747cd068d3c6c5431ada3f94d7405deed2e4
[INFO] running `Command { std: "docker" "start" "-a" "469b8790d233396231ae8da239d5747cd068d3c6c5431ada3f94d7405deed2e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "469b8790d233396231ae8da239d5747cd068d3c6c5431ada3f94d7405deed2e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469b8790d233396231ae8da239d5747cd068d3c6c5431ada3f94d7405deed2e4", kill_on_drop: false }`
[INFO] [stdout] 469b8790d233396231ae8da239d5747cd068d3c6c5431ada3f94d7405deed2e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6724b5ca2c60477f56a558b38b72be31aba4d9dbad6838cc82d8fd622295e66
[INFO] running `Command { std: "docker" "start" "-a" "a6724b5ca2c60477f56a558b38b72be31aba4d9dbad6838cc82d8fd622295e66", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling slang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io_helpers.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 |     contents: Box<Write>
[INFO] [stdout]    |                   ^^^^^ help: use `dyn`: `dyn Write`
[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_helpers.rs:33:36
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn simplify_output(writer: Box<Write>) -> SimpleOutput {
[INFO] [stdout]    |                                    ^^^^^ help: use `dyn`: `dyn Write`
[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/main.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let out_stream: Box<Write> = match task.out_file {
[INFO] [stdout]    |                         ^^^^^ help: use `dyn`: `dyn Write`
[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: unused variable: `map`
[INFO] [stdout]    --> src/trie/hash.rs:165:44
[INFO] [stdout]     |
[INFO] [stdout] 165 |                 trie: HashTrie::Standard { map, .. }, 
[INFO] [stdout]     |                                            ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_id`
[INFO] [stdout]    --> src/trie/hash.rs:320:49
[INFO] [stdout]     |
[INFO] [stdout] 320 |                 trie: HashTrie::Standard { map, next_id }, 
[INFO] [stdout]     |                                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/macro_def.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn read_macros(&mut self, tokens: &[Token]) {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/macro_def.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stdout]    |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trie_root`
[INFO] [stdout]   --> src/macro_def.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let trie_root = self.contents.as_view();
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trie_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remaining`
[INFO] [stdout]   --> src/macro_def.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let mut remaining = input;
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remaining`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `out_stream`
[INFO] [stdout]   --> src/macro_def.rs:60:50
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn expand_tokens(&self, input: &[Token], out_stream: &mut SimpleOutput) -> Result<()> {
[INFO] [stdout]    |                                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_out_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/trie/hash.rs:346:13
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let mut next_edge;
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/macro_def.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let mut remaining = input;
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]   --> src/macro_def.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Var,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Token`
[INFO] [stdout]   --> src/macro_def.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     Token {
[INFO] [stdout] 18 | |         value: String
[INFO] [stdout] 19 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BlockVar`
[INFO] [stdout]   --> src/macro_def.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     BlockVar {
[INFO] [stdout] 22 | |         block_delim: BlockDelimiter
[INFO] [stdout] 23 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SquareBracket`
[INFO] [stdout]   --> src/macro_def.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     SquareBracket,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CurlyBracket`
[INFO] [stdout]   --> src/macro_def.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     CurlyBracket,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Parenthesis`
[INFO] [stdout]   --> src/macro_def.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Parenthesis
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Text`
[INFO] [stdout]   --> src/macro_def.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | /     Text {
[INFO] [stdout] 38 | |         data: String
[INFO] [stdout] 39 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]   --> src/macro_def.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     Var {
[INFO] [stdout] 41 | |         index: u8
[INFO] [stdout] 42 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_macro`
[INFO] [stdout]   --> src/macro_def.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `contents`
[INFO] [stdout]   --> src/io_helpers.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     contents: Box<Write>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/io_helpers.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn write(&mut self, val: &str) -> Result<()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.68s
[INFO] running `Command { std: "docker" "inspect" "a6724b5ca2c60477f56a558b38b72be31aba4d9dbad6838cc82d8fd622295e66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6724b5ca2c60477f56a558b38b72be31aba4d9dbad6838cc82d8fd622295e66", kill_on_drop: false }`
[INFO] [stdout] a6724b5ca2c60477f56a558b38b72be31aba4d9dbad6838cc82d8fd622295e66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4eb4cccdd4c59f2d914560de8569c0d087d88665386aa123e308e0e84e37b471
[INFO] running `Command { std: "docker" "start" "-a" "4eb4cccdd4c59f2d914560de8569c0d087d88665386aa123e308e0e84e37b471", kill_on_drop: false }`
[INFO] [stderr]    Compiling slang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io_helpers.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 |     contents: Box<Write>
[INFO] [stdout]    |                   ^^^^^ help: use `dyn`: `dyn Write`
[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_helpers.rs:33:36
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn simplify_output(writer: Box<Write>) -> SimpleOutput {
[INFO] [stdout]    |                                    ^^^^^ help: use `dyn`: `dyn Write`
[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/main.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let out_stream: Box<Write> = match task.out_file {
[INFO] [stdout]    |                         ^^^^^ help: use `dyn`: `dyn Write`
[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: unused variable: `map`
[INFO] [stdout]    --> src/trie/hash.rs:165:44
[INFO] [stdout]     |
[INFO] [stdout] 165 |                 trie: HashTrie::Standard { map, .. }, 
[INFO] [stdout]     |                                            ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_id`
[INFO] [stdout]    --> src/trie/hash.rs:320:49
[INFO] [stdout]     |
[INFO] [stdout] 320 |                 trie: HashTrie::Standard { map, next_id }, 
[INFO] [stdout]     |                                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/macro_def.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn read_macros(&mut self, tokens: &[Token]) {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/macro_def.rs:56:30
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stdout]    |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trie_root`
[INFO] [stdout]   --> src/macro_def.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let trie_root = self.contents.as_view();
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trie_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remaining`
[INFO] [stdout]   --> src/macro_def.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let mut remaining = input;
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remaining`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `out_stream`
[INFO] [stdout]   --> src/macro_def.rs:60:50
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn expand_tokens(&self, input: &[Token], out_stream: &mut SimpleOutput) -> Result<()> {
[INFO] [stdout]    |                                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_out_stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/trie/hash.rs:346:13
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let mut next_edge;
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/macro_def.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let mut remaining = input;
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]   --> src/macro_def.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Var,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Token`
[INFO] [stdout]   --> src/macro_def.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     Token {
[INFO] [stdout] 18 | |         value: String
[INFO] [stdout] 19 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BlockVar`
[INFO] [stdout]   --> src/macro_def.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     BlockVar {
[INFO] [stdout] 22 | |         block_delim: BlockDelimiter
[INFO] [stdout] 23 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SquareBracket`
[INFO] [stdout]   --> src/macro_def.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     SquareBracket,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CurlyBracket`
[INFO] [stdout]   --> src/macro_def.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     CurlyBracket,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Parenthesis`
[INFO] [stdout]   --> src/macro_def.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Parenthesis
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Text`
[INFO] [stdout]   --> src/macro_def.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | /     Text {
[INFO] [stdout] 38 | |         data: String
[INFO] [stdout] 39 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]   --> src/macro_def.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     Var {
[INFO] [stdout] 41 | |         index: u8
[INFO] [stdout] 42 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_macro`
[INFO] [stdout]   --> src/macro_def.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `contents`
[INFO] [stdout]   --> src/io_helpers.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     contents: Box<Write>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/io_helpers.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn write(&mut self, val: &str) -> Result<()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "4eb4cccdd4c59f2d914560de8569c0d087d88665386aa123e308e0e84e37b471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eb4cccdd4c59f2d914560de8569c0d087d88665386aa123e308e0e84e37b471", kill_on_drop: false }`
[INFO] [stdout] 4eb4cccdd4c59f2d914560de8569c0d087d88665386aa123e308e0e84e37b471
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 06c0ae012bfe8646c2616a3af4fa04b891921485cb5a0b835d68ded0e3b6d9c4
[INFO] running `Command { std: "docker" "start" "-a" "06c0ae012bfe8646c2616a3af4fa04b891921485cb5a0b835d68ded0e3b6d9c4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 5 tests
[INFO] [stderr]   --> src/io_helpers.rs:22:19
[INFO] [stdout] test tokenizer::tests::keeps_singletons_separate ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tokenizer::tests::function_like ... ok
[INFO] [stderr] 22 |     contents: Box<Write>
[INFO] [stdout] test tokenizer::tests::preserves_suffixes ... ok
[INFO] [stderr]    |                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] test trie::hash::test::insert_insert_get ... ok
[INFO] [stderr]    |
[INFO] [stdout] test trie::hash::test::insert_get ... ok
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stderr]    = 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] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io_helpers.rs:33:36
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn simplify_output(writer: Box<Write>) -> SimpleOutput {
[INFO] [stderr]    |                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:73:25
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let out_stream: Box<Write> = match task.out_file {
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `map`
[INFO] [stderr]    --> src/trie/hash.rs:165:44
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 trie: HashTrie::Standard { map, .. }, 
[INFO] [stderr]     |                                            ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `next_id`
[INFO] [stderr]    --> src/trie/hash.rs:320:49
[INFO] [stderr]     |
[INFO] [stderr] 320 |                 trie: HashTrie::Standard { map, next_id }, 
[INFO] [stderr]     |                                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/macro_def.rs:52:35
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn read_macros(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/macro_def.rs:56:30
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trie_root`
[INFO] [stderr]   --> src/macro_def.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |         let trie_root = self.contents.as_view();
[INFO] [stderr]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trie_root`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `remaining`
[INFO] [stderr]   --> src/macro_def.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut remaining = input;
[INFO] [stderr]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remaining`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `out_stream`
[INFO] [stderr]   --> src/macro_def.rs:60:50
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn expand_tokens(&self, input: &[Token], out_stream: &mut SimpleOutput) -> Result<()> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_out_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/trie/hash.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |         let mut next_edge;
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/macro_def.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut remaining = input;
[INFO] [stderr]    |             ----^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/macro_def.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Var,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Token`
[INFO] [stderr]   --> src/macro_def.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | /     Token {
[INFO] [stderr] 18 | |         value: String
[INFO] [stderr] 19 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BlockVar`
[INFO] [stderr]   --> src/macro_def.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | /     BlockVar {
[INFO] [stderr] 22 | |         block_delim: BlockDelimiter
[INFO] [stderr] 23 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SquareBracket`
[INFO] [stderr]   --> src/macro_def.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     SquareBracket,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CurlyBracket`
[INFO] [stderr]   --> src/macro_def.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     CurlyBracket,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Parenthesis`
[INFO] [stderr]   --> src/macro_def.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Parenthesis
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Text`
[INFO] [stderr]   --> src/macro_def.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | /     Text {
[INFO] [stderr] 38 | |         data: String
[INFO] [stderr] 39 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/macro_def.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | /     Var {
[INFO] [stderr] 41 | |         index: u8
[INFO] [stderr] 42 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_macro`
[INFO] [stderr]   --> src/macro_def.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `contents`
[INFO] [stderr]   --> src/io_helpers.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     contents: Box<Write>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `write`
[INFO] [stderr]   --> src/io_helpers.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn write(&mut self, val: &str) -> Result<()> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 23 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slang-53d5a98f3c64c8fd)
[INFO] running `Command { std: "docker" "inspect" "06c0ae012bfe8646c2616a3af4fa04b891921485cb5a0b835d68ded0e3b6d9c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06c0ae012bfe8646c2616a3af4fa04b891921485cb5a0b835d68ded0e3b6d9c4", kill_on_drop: false }`
[INFO] [stdout] 06c0ae012bfe8646c2616a3af4fa04b891921485cb5a0b835d68ded0e3b6d9c4