[INFO] cloning repository https://github.com/mwolicki/mlisp_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mwolicki/mlisp_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwolicki%2Fmlisp_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwolicki%2Fmlisp_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 103fb4a30b0175fec4714bb69cc9a88fbbc2beca
[INFO] checking mwolicki/mlisp_rust against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwolicki%2Fmlisp_rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mwolicki/mlisp_rust
[INFO] finished tweaking git repo https://github.com/mwolicki/mlisp_rust
[INFO] tweaked toml for git repo https://github.com/mwolicki/mlisp_rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mwolicki/mlisp_rust on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mwolicki/mlisp_rust 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b15af5b84e36432d6f1a284f2740b5605121a534f3835f2bb1caebf1b04975f0
[INFO] running `Command { std: "docker" "start" "-a" "b15af5b84e36432d6f1a284f2740b5605121a534f3835f2bb1caebf1b04975f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b15af5b84e36432d6f1a284f2740b5605121a534f3835f2bb1caebf1b04975f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b15af5b84e36432d6f1a284f2740b5605121a534f3835f2bb1caebf1b04975f0", kill_on_drop: false }`
[INFO] [stdout] b15af5b84e36432d6f1a284f2740b5605121a534f3835f2bb1caebf1b04975f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "-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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27a41b3412c728b9aeb1d19cb9a2595d4e7add3d577cf5a120879942732df73c
[INFO] running `Command { std: "docker" "start" "-a" "27a41b3412c728b9aeb1d19cb9a2595d4e7add3d577cf5a120879942732df73c", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Checking mlisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/eval.rs:100:18
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 };
[INFO] [stdout]     |                  ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser_combinators.rs:210:31
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub type RcParser<'a, R> = Rc<Parser<'a, Return = R> + 'a>;
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub type RcParser<'a, R> = Rc<dyn Parser<'a, Return = R> + 'a>;
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parser::parse`
[INFO] [stdout]  --> src/eval.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use parser::parse;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/eval.rs:100:18
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 };
[INFO] [stdout]     |                  ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser_combinators.rs:210:31
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub type RcParser<'a, R> = Rc<Parser<'a, Return = R> + 'a>;
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 210 | pub type RcParser<'a, R> = Rc<dyn Parser<'a, Return = R> + 'a>;
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `p_str` is never used
[INFO] [stdout]   --> src/parser_combinators.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn p_str<'a>(string: &'a str) -> RcParser<'a, &str> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `all` is never used
[INFO] [stdout]    --> src/parser_combinators.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 251 | pub trait Parser<'a> {
[INFO] [stdout]     |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 292 |     fn all(self) -> RcParser<'a, Vec<Self::Return>>
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser_combinators.rs:26:51
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn p_str<'a>(string: &'a str) -> RcParser<'a, &str> {
[INFO] [stdout]    |                           --                  --  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                           |                   |
[INFO] [stdout]    |                           |                   the same lifetime is named here
[INFO] [stdout]    |                           the lifetime is named 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: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn p_str<'a>(string: &'a str) -> RcParser<'a, &'a str> {
[INFO] [stdout]    |                                                    ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/parser.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn parse(txt: &[char]) -> ParseResult<Vec<Expr>> {
[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] 4 | pub fn parse(txt: &[char]) -> ParseResult<'_, Vec<Expr>> {
[INFO] [stdout]   |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `p_str` is never used
[INFO] [stdout]   --> src/parser_combinators.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn p_str<'a>(string: &'a str) -> RcParser<'a, &str> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `all` is never used
[INFO] [stdout]    --> src/parser_combinators.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 251 | pub trait Parser<'a> {
[INFO] [stdout]     |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 292 |     fn all(self) -> RcParser<'a, Vec<Self::Return>>
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/parser_combinators.rs:26:51
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn p_str<'a>(string: &'a str) -> RcParser<'a, &str> {
[INFO] [stdout]    |                           --                  --  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                           |                   |
[INFO] [stdout]    |                           |                   the same lifetime is named here
[INFO] [stdout]    |                           the lifetime is named 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: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn p_str<'a>(string: &'a str) -> RcParser<'a, &'a str> {
[INFO] [stdout]    |                                                    ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> src/parser.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn parse(txt: &[char]) -> ParseResult<Vec<Expr>> {
[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] 4 | pub fn parse(txt: &[char]) -> ParseResult<'_, Vec<Expr>> {
[INFO] [stdout]   |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "27a41b3412c728b9aeb1d19cb9a2595d4e7add3d577cf5a120879942732df73c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27a41b3412c728b9aeb1d19cb9a2595d4e7add3d577cf5a120879942732df73c", kill_on_drop: false }`
[INFO] [stdout] 27a41b3412c728b9aeb1d19cb9a2595d4e7add3d577cf5a120879942732df73c
