[INFO] cloning repository https://github.com/ReubenHillyard/beta
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ReubenHillyard/beta" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReubenHillyard%2Fbeta", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReubenHillyard%2Fbeta'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f2407f905a3740d3007e9cdd7cca1b9557f5f91
[INFO] checking ReubenHillyard/beta against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FReubenHillyard%2Fbeta" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ReubenHillyard/beta
[INFO] finished tweaking git repo https://github.com/ReubenHillyard/beta
[INFO] tweaked toml for git repo https://github.com/ReubenHillyard/beta written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ReubenHillyard/beta on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ReubenHillyard/beta already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af0bc9fe11abb83186493e618e43a7fdaf63f4e326463cc0229247e49d0a019c
[INFO] running `Command { std: "docker" "start" "-a" "af0bc9fe11abb83186493e618e43a7fdaf63f4e326463cc0229247e49d0a019c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af0bc9fe11abb83186493e618e43a7fdaf63f4e326463cc0229247e49d0a019c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af0bc9fe11abb83186493e618e43a7fdaf63f4e326463cc0229247e49d0a019c", kill_on_drop: false }`
[INFO] [stdout] af0bc9fe11abb83186493e618e43a7fdaf63f4e326463cc0229247e49d0a019c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a824be98b1565b7d4c0e82e9da8bc56dad7b729b8ddb0a03854c5d54010171c
[INFO] running `Command { std: "docker" "start" "-a" "9a824be98b1565b7d4c0e82e9da8bc56dad7b729b8ddb0a03854c5d54010171c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling semver v1.0.18
[INFO] [stderr]    Compiling aho-corasick v1.0.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling rustix v0.38.14
[INFO] [stderr]     Checking anstyle v1.0.3
[INFO] [stderr]     Checking parking_lot_core v0.9.8
[INFO] [stderr]     Checking lock_api v0.4.10
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]    Compiling peg-runtime v0.8.1
[INFO] [stderr]     Checking anstream v0.5.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.7
[INFO] [stderr]    Compiling inkwell v0.2.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking clap_builder v4.4.4
[INFO] [stderr]     Checking yansi-term v0.1.2
[INFO] [stderr]     Checking fastrand v2.0.0
[INFO] [stderr]     Checking annotate-snippets v0.9.1
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]    Compiling syn v2.0.22
[INFO] [stderr]    Compiling peg-macros v0.8.1
[INFO] [stderr]    Compiling regex-automata v0.3.8
[INFO] [stderr]     Checking peg v0.8.1
[INFO] [stderr]     Checking tempfile v3.8.0
[INFO] [stderr]    Compiling regex v1.9.5
[INFO] [stderr]    Compiling logos-codegen v0.13.0
[INFO] [stderr]    Compiling llvm-sys v160.1.3
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]    Compiling inkwell_internals v0.8.0
[INFO] [stderr]    Compiling logos-derive v0.13.0
[INFO] [stderr]     Checking logos v0.13.0
[INFO] [stderr]     Checking clap v4.4.4
[INFO] [stderr]     Checking beta v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/commands/main_command/lex.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub(super) fn lex(&self) -> Result<Vec<(Token, Span)>, String> {
[INFO] [stdout]    |                       ^^^^^                 ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub(super) fn lex(&self) -> Result<Vec<(Token<'_>, Span)>, String> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lexer.rs:76:20
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn lex(source: &str) -> impl Iterator<Item = (Result<Token, ()>, Span)> {
[INFO] [stdout]    |                    ^^^^ the lifetime is elided here      ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn lex(source: &str) -> impl Iterator<Item = (Result<Token<'_>, ()>, Span)> {
[INFO] [stdout]    |                                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser/mod.rs:224:34
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub(crate) fn parse_expr(source: &str) -> Option<ast::Expression> {
[INFO] [stdout]     |                                  ^^^^            ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub(crate) fn parse_expr(source: &str) -> Option<ast::Expression<'_>> {
[INFO] [stdout]     |                                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/commands/main_command/lex.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub(super) fn lex(&self) -> Result<Vec<(Token, Span)>, String> {
[INFO] [stdout]    |                       ^^^^^                 ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub(super) fn lex(&self) -> Result<Vec<(Token<'_>, Span)>, String> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lexer.rs:76:20
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn lex(source: &str) -> impl Iterator<Item = (Result<Token, ()>, Span)> {
[INFO] [stdout]    |                    ^^^^ the lifetime is elided here      ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn lex(source: &str) -> impl Iterator<Item = (Result<Token<'_>, ()>, Span)> {
[INFO] [stdout]    |                                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser/mod.rs:224:34
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub(crate) fn parse_expr(source: &str) -> Option<ast::Expression> {
[INFO] [stdout]     |                                  ^^^^            ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub(crate) fn parse_expr(source: &str) -> Option<ast::Expression<'_>> {
[INFO] [stdout]     |                                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<<RB as ReadBack<'_>>::ExprT, Void>
[INFO] [stdout]   --> src/typing/read_back.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |     match rb.read_back(defs, ctx_len) {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<environment::Index, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:130:69
[INFO] [stdout]     |
[INFO] [stdout] 130 |       fn rename_level(self, level: Level) -> Result<Index, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________________________^
[INFO] [stdout] 131 | |         Ok(level_to_index_with_ctx_len(self, level))
[INFO] [stdout] 132 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<environment::Index, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         Ok(level_to_index_with_ctx_len(self, level))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<CoreExpression<'_>, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:137:48
[INFO] [stdout]     |
[INFO] [stdout] 137 |       ) -> Result<CoreExpression<'a>, Self::Err> {
[INFO] [stdout]     |  ________________________________________________^
[INFO] [stdout] 138 | |         let out = defs.lookup_meta(mv);
[INFO] [stdout] 139 | |         if let Value::Neutral(Neutral::Principal(Principal::MetaVariable(mv_))) = out {
[INFO] [stdout] 140 | |             if mv_ == mv {
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |         out.read_back(defs, self)
[INFO] [stdout] 145 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<CoreExpression<'_>, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:141:24
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 return Ok(CoreExpression::MetaVariable(mv));
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<CoreExpression<'_>, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         out.read_back(defs, self)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<<RB as ReadBack<'_>>::ExprT, Void>
[INFO] [stdout]   --> src/typing/read_back.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |     match rb.read_back(defs, ctx_len) {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<environment::Index, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:130:69
[INFO] [stdout]     |
[INFO] [stdout] 130 |       fn rename_level(self, level: Level) -> Result<Index, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________________________^
[INFO] [stdout] 131 | |         Ok(level_to_index_with_ctx_len(self, level))
[INFO] [stdout] 132 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<environment::Index, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         Ok(level_to_index_with_ctx_len(self, level))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<CoreExpression<'_>, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:137:48
[INFO] [stdout]     |
[INFO] [stdout] 137 |       ) -> Result<CoreExpression<'a>, Self::Err> {
[INFO] [stdout]     |  ________________________________________________^
[INFO] [stdout] 138 | |         let out = defs.lookup_meta(mv);
[INFO] [stdout] 139 | |         if let Value::Neutral(Neutral::Principal(Principal::MetaVariable(mv_))) = out {
[INFO] [stdout] 140 | |             if mv_ == mv {
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |         out.read_back(defs, self)
[INFO] [stdout] 145 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<CoreExpression<'_>, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:141:24
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 return Ok(CoreExpression::MetaVariable(mv));
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<CoreExpression<'_>, Void>
[INFO] [stdout]    --> src/typing/read_back.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         out.read_back(defs, self)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `beta` (bin "beta") due to 6 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `beta` (bin "beta" test) due to 6 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9a824be98b1565b7d4c0e82e9da8bc56dad7b729b8ddb0a03854c5d54010171c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a824be98b1565b7d4c0e82e9da8bc56dad7b729b8ddb0a03854c5d54010171c", kill_on_drop: false }`
[INFO] [stdout] 9a824be98b1565b7d4c0e82e9da8bc56dad7b729b8ddb0a03854c5d54010171c
