[INFO] cloning repository https://github.com/owainlewis/rsc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/owainlewis/rsc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowainlewis%2Frsc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowainlewis%2Frsc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab09fadcbead42ab1c85177f0e77781a35273426
[INFO] checking owainlewis/rsc against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowainlewis%2Frsc" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/owainlewis/rsc on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/owainlewis/rsc
[INFO] finished tweaking git repo https://github.com/owainlewis/rsc
[INFO] tweaked toml for git repo https://github.com/owainlewis/rsc written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/owainlewis/rsc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4f96e922dae95d6cfb7173a818e9340e5a5ce7751e6efe396e1cf1cb6558c93
[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" "c4f96e922dae95d6cfb7173a818e9340e5a5ce7751e6efe396e1cf1cb6558c93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4f96e922dae95d6cfb7173a818e9340e5a5ce7751e6efe396e1cf1cb6558c93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4f96e922dae95d6cfb7173a818e9340e5a5ce7751e6efe396e1cf1cb6558c93", kill_on_drop: false }`
[INFO] [stdout] c4f96e922dae95d6cfb7173a818e9340e5a5ce7751e6efe396e1cf1cb6558c93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff7c5617c9c9d4f7d9f0508e360eb2810e6e9b008caa8f3366f5005a5050f99a
[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" "ff7c5617c9c9d4f7d9f0508e360eb2810e6e9b008caa8f3366f5005a5050f99a", kill_on_drop: false }`
[INFO] [stderr]     Checking rsc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:63:27
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 '-' | '0' ... '9' => lex_number(&self.input),
[INFO] [stdout]    |                           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |                 'a' ... 'z' => lex_identifier(&self.input),
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/lexer.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                     /// Ignore whitespace
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 67 |                     self.advance(1);
[INFO] [stdout]    |                     --------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:92:16
[INFO] [stdout]    |
[INFO] [stdout] 92 |            '0' ... '9' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ind`
[INFO] [stdout]   --> src/lexer.rs:90:10
[INFO] [stdout]    |
[INFO] [stdout] 90 |     for (ind, ch) in input.char_indices() {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_ind`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ind`
[INFO] [stdout]    --> src/lexer.rs:104:10
[INFO] [stdout]     |
[INFO] [stdout] 104 |     for (ind, ch) in input.char_indices() {
[INFO] [stdout]     |          ^^^ help: if this is intentional, prefix it with an underscore: `_ind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/lexer.rs:46:30
[INFO] [stdout]    |
[INFO] [stdout] 46 |         while let Ok((token, size)) = self.
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/lexer.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |                 c => {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:63:27
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 '-' | '0' ... '9' => lex_number(&self.input),
[INFO] [stdout]    |                           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |                 'a' ... 'z' => lex_identifier(&self.input),
[INFO] [stdout]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/lexer.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                     /// Ignore whitespace
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 67 |                     self.advance(1);
[INFO] [stdout]    |                     --------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:92:16
[INFO] [stdout]    |
[INFO] [stdout] 92 |            '0' ... '9' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time
[INFO] [stdout]   --> src/lexer.rs:46:39
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn tokens(&mut self) -> Vec<Token> {
[INFO] [stdout]    |                   - let's call the lifetime of this reference `'1`
[INFO] [stdout] 45 |         let mut tokens = Vec::new();
[INFO] [stdout] 46 |         while let Ok((token, size)) = self.
[INFO] [stdout]    |                                       ^^^^ mutable borrow starts here in previous iteration of loop
[INFO] [stdout] ...
[INFO] [stdout] 54 |         return tokens
[INFO] [stdout]    |                ------ returning this value requires that `*self` is borrowed for `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `ind`
[INFO] [stdout]   --> src/lexer.rs:90:10
[INFO] [stdout]    |
[INFO] [stdout] 90 |     for (ind, ch) in input.char_indices() {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_ind`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ind`
[INFO] [stdout]    --> src/lexer.rs:104:10
[INFO] [stdout]     |
[INFO] [stdout] 104 |     for (ind, ch) in input.char_indices() {
[INFO] [stdout]     |          ^^^ help: if this is intentional, prefix it with an underscore: `_ind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/lexer.rs:46:30
[INFO] [stdout]    |
[INFO] [stdout] 46 |         while let Ok((token, size)) = self.
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/lexer.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |                 c => {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time
[INFO] [stdout]   --> src/lexer.rs:46:39
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn tokens(&mut self) -> Vec<Token> {
[INFO] [stdout]    |                   - let's call the lifetime of this reference `'1`
[INFO] [stdout] 45 |         let mut tokens = Vec::new();
[INFO] [stdout] 46 |         while let Ok((token, size)) = self.
[INFO] [stdout]    |                                       ^^^^ mutable borrow starts here in previous iteration of loop
[INFO] [stdout] ...
[INFO] [stdout] 54 |         return tokens
[INFO] [stdout]    |                ------ returning this value requires that `*self` is borrowed for `'1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ff7c5617c9c9d4f7d9f0508e360eb2810e6e9b008caa8f3366f5005a5050f99a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff7c5617c9c9d4f7d9f0508e360eb2810e6e9b008caa8f3366f5005a5050f99a", kill_on_drop: false }`
[INFO] [stdout] ff7c5617c9c9d4f7d9f0508e360eb2810e6e9b008caa8f3366f5005a5050f99a
