[INFO] cloning repository https://github.com/MinkowskiMetric/my_rust_lox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MinkowskiMetric/my_rust_lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMinkowskiMetric%2Fmy_rust_lox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMinkowskiMetric%2Fmy_rust_lox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3496e2dde413a430903bee4bf9a8f278877700e9
[INFO] checking MinkowskiMetric/my_rust_lox against try#b6bca0d7327839b5e3f7a7779947cb9113d08917+rustflags=-Zstrict-projection-item-bounds for 150662-leaf
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMinkowskiMetric%2Fmy_rust_lox" "/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/MinkowskiMetric/my_rust_lox
[INFO] finished tweaking git repo https://github.com/MinkowskiMetric/my_rust_lox
[INFO] tweaked toml for git repo https://github.com/MinkowskiMetric/my_rust_lox written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MinkowskiMetric/my_rust_lox on toolchain b6bca0d7327839b5e3f7a7779947cb9113d08917
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MinkowskiMetric/my_rust_lox 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" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4b18057f4916a9272ba13ffead009bb79be5e70792e5ec1d94f4bb34628561b
[INFO] running `Command { std: "docker" "start" "-a" "b4b18057f4916a9272ba13ffead009bb79be5e70792e5ec1d94f4bb34628561b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4b18057f4916a9272ba13ffead009bb79be5e70792e5ec1d94f4bb34628561b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4b18057f4916a9272ba13ffead009bb79be5e70792e5ec1d94f4bb34628561b", kill_on_drop: false }`
[INFO] [stdout] b4b18057f4916a9272ba13ffead009bb79be5e70792e5ec1d94f4bb34628561b
[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 -Zstrict-projection-item-bounds" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18f16c6ae4eb07ab2f8e6142601c83dc573ab5d4792bd24d053090212d123936
[INFO] running `Command { std: "docker" "start" "-a" "18f16c6ae4eb07ab2f8e6142601c83dc573ab5d4792bd24d053090212d123936", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling delegate-attr v0.2.9
[INFO] [stderr]     Checking owned_chars v0.3.2
[INFO] [stderr]     Checking my-rox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/error_collector.rs:58:24
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl<T, Iter: Iterator<Item = LoxResult<T>>> ErrorCollector<T, Iter> {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<Iter as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/lexer/tokenizer.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<Iter: Iterator<Item = char>> CharPeeper<Iter> {
[INFO] [stdout]    |                     ^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<Iter as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/lexer/tokenizer.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 | impl<Iter: Iterator<Item = char>> TokenReader<Iter> {
[INFO] [stdout]    |                     ^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<Iter as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lexer/tokenizer.rs:337:30
[INFO] [stdout]     |
[INFO] [stdout] 337 |     Ok(TokenReader::new(code.into_chars(), Rc::new(path.into()), 1))
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `into_chars(...)` to keep using the current method
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(string_into_chars)]` to the crate attributes to enable `String::into_chars`
[INFO] [stdout]    --> src/main.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(string_into_chars)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<Iter as Iterator>::Item == Result<T, error::LoxError>`
[INFO] [stdout]   --> src/error_collector.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         Self {
[INFO] [stdout]    |         ^^^^ cannot satisfy `<Iter as Iterator>::Item == Result<T, error::LoxError>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `ErrorCollector`
[INFO] [stdout]   --> src/error_collector.rs:53:45
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct ErrorCollector<T, Iter: Iterator<Item = LoxResult<T>>> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^ required by this bound in `ErrorCollector`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/error_collector.rs:58:24
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl<T, Iter: Iterator<Item = LoxResult<T>>> ErrorCollector<T, Iter> {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<Iter as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/lexer/tokenizer.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<Iter: Iterator<Item = char>> CharPeeper<Iter> {
[INFO] [stdout]    |                     ^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<Iter as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/lexer/tokenizer.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 | impl<Iter: Iterator<Item = char>> TokenReader<Iter> {
[INFO] [stdout]    |                     ^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<Iter as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lexer/tokenizer.rs:337:30
[INFO] [stdout]     |
[INFO] [stdout] 337 |     Ok(TokenReader::new(code.into_chars(), Rc::new(path.into()), 1))
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: call with fully qualified syntax `into_chars(...)` to keep using the current method
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(string_into_chars)]` to the crate attributes to enable `String::into_chars`
[INFO] [stdout]    --> src/main.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout]   1 + #![feature(string_into_chars)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<Iter as Iterator>::Item == char`
[INFO] [stdout]   --> src/lexer/tokenizer.rs:44:26
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let peek1 = iter.next();
[INFO] [stdout]    |                          ^^^^ cannot satisfy `<Iter as Iterator>::Item == char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<Iter as Iterator>::Item == char`
[INFO] [stdout]   --> src/lexer/tokenizer.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         Self {
[INFO] [stdout]    |         ^^^^ cannot satisfy `<Iter as Iterator>::Item == char`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `TokenReader`
[INFO] [stdout]   --> src/lexer/tokenizer.rs:69:39
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct TokenReader<Iter: Iterator<Item = char>> {
[INFO] [stdout]    |                                       ^^^^^^^^^^^ required by this bound in `TokenReader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<Iter as Iterator>::Item == Result<T, LoxError>`
[INFO] [stdout]   --> src/error_collector.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         Self {
[INFO] [stdout]    |         ^^^^ cannot satisfy `<Iter as Iterator>::Item == Result<T, LoxError>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `ErrorCollector`
[INFO] [stdout]   --> src/error_collector.rs:53:45
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct ErrorCollector<T, Iter: Iterator<Item = LoxResult<T>>> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^ required by this bound in `ErrorCollector`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<Iter as Iterator>::Item == char`
[INFO] [stdout]   --> src/lexer/tokenizer.rs:44:26
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let peek1 = iter.next();
[INFO] [stdout]    |                          ^^^^ cannot satisfy `<Iter as Iterator>::Item == char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `<Iter as Iterator>::Item == char`
[INFO] [stdout]   --> src/lexer/tokenizer.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         Self {
[INFO] [stdout]    |         ^^^^ cannot satisfy `<Iter as Iterator>::Item == char`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `TokenReader`
[INFO] [stdout]   --> src/lexer/tokenizer.rs:69:39
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct TokenReader<Iter: Iterator<Item = char>> {
[INFO] [stdout]    |                                       ^^^^^^^^^^^ required by this bound in `TokenReader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `my-rox` (bin "my-rox") due to 6 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `my-rox` (bin "my-rox" test) due to 6 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "18f16c6ae4eb07ab2f8e6142601c83dc573ab5d4792bd24d053090212d123936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18f16c6ae4eb07ab2f8e6142601c83dc573ab5d4792bd24d053090212d123936", kill_on_drop: false }`
[INFO] [stdout] 18f16c6ae4eb07ab2f8e6142601c83dc573ab5d4792bd24d053090212d123936