[INFO] cloning repository https://github.com/nt591/lox-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nt591/lox-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnt591%2Flox-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnt591%2Flox-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11b30b19ad685152c6ec56f58fa78d9f9e336dfb
[INFO] testing nt591/lox-rust against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnt591%2Flox-rust" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nt591/lox-rust on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nt591/lox-rust
[INFO] finished tweaking git repo https://github.com/nt591/lox-rust
[INFO] tweaked toml for git repo https://github.com/nt591/lox-rust written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/nt591/lox-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c45ed1a396dbb562db2c6986a0ed9fdb465e61f9d21064f54d6770b9d7f64d7
[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" "9c45ed1a396dbb562db2c6986a0ed9fdb465e61f9d21064f54d6770b9d7f64d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c45ed1a396dbb562db2c6986a0ed9fdb465e61f9d21064f54d6770b9d7f64d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c45ed1a396dbb562db2c6986a0ed9fdb465e61f9d21064f54d6770b9d7f64d7", kill_on_drop: false }`
[INFO] [stdout] 9c45ed1a396dbb562db2c6986a0ed9fdb465e61f9d21064f54d6770b9d7f64d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a15b2324691d377c4a4b80c91e55b5d8156ac995f77c5b73c6db2cb96c99f7e2
[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" "a15b2324691d377c4a4b80c91e55b5d8156ac995f77c5b73c6db2cb96c99f7e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling lox-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: function pointers cannot appear in constant functions
[INFO] [stdout]    --> src/compiler.rs:643:20
[INFO] [stdout]     |
[INFO] [stdout] 643 |     const fn infix(infix: ParserFunction, precedence: Precedence) -> ParseRule {
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: mutable references are not allowed in constant functions
[INFO] [stdout]    --> src/compiler.rs:643:20
[INFO] [stdout]     |
[INFO] [stdout] 643 |     const fn infix(infix: ParserFunction, precedence: Precedence) -> ParseRule {
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
[INFO] [stdout]     = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: function pointers cannot appear in constant functions
[INFO] [stdout]    --> src/compiler.rs:651:21
[INFO] [stdout]     |
[INFO] [stdout] 651 |     const fn prefix(prefix: ParserFunction, precedence: Precedence) -> ParseRule {
[INFO] [stdout]     |                     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: mutable references are not allowed in constant functions
[INFO] [stdout]    --> src/compiler.rs:651:21
[INFO] [stdout]     |
[INFO] [stdout] 651 |     const fn prefix(prefix: ParserFunction, precedence: Precedence) -> ParseRule {
[INFO] [stdout]     |                     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
[INFO] [stdout]     = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: function pointers cannot appear in constant functions
[INFO] [stdout]    --> src/compiler.rs:659:19
[INFO] [stdout]     |
[INFO] [stdout] 659 |     const fn both(prefix: ParserFunction, infix: ParserFunction, precedence: Precedence) -> ParseRule {
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: mutable references are not allowed in constant functions
[INFO] [stdout]    --> src/compiler.rs:659:19
[INFO] [stdout]     |
[INFO] [stdout] 659 |     const fn both(prefix: ParserFunction, infix: ParserFunction, precedence: Precedence) -> ParseRule {
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
[INFO] [stdout]     = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: function pointers cannot appear in constant functions
[INFO] [stdout]    --> src/compiler.rs:659:43
[INFO] [stdout]     |
[INFO] [stdout] 659 |     const fn both(prefix: ParserFunction, infix: ParserFunction, precedence: Precedence) -> ParseRule {
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: mutable references are not allowed in constant functions
[INFO] [stdout]    --> src/compiler.rs:659:43
[INFO] [stdout]     |
[INFO] [stdout] 659 |     const fn both(prefix: ParserFunction, infix: ParserFunction, precedence: Precedence) -> ParseRule {
[INFO] [stdout]     |                                           ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
[INFO] [stdout]     = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: function pointers cannot appear in constant functions
[INFO] [stdout]    --> src/compiler.rs:669:20
[INFO] [stdout]     |
[INFO] [stdout] 669 |             infix: None,
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: mutable references are not allowed in constant functions
[INFO] [stdout]    --> src/compiler.rs:669:20
[INFO] [stdout]     |
[INFO] [stdout] 669 |             infix: None,
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
[INFO] [stdout]     = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: function pointers cannot appear in constant functions
[INFO] [stdout]    --> src/compiler.rs:670:21
[INFO] [stdout]     |
[INFO] [stdout] 670 |             prefix: None,
[INFO] [stdout]     |                     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_fn_ptr_basics)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: mutable references are not allowed in constant functions
[INFO] [stdout]    --> src/compiler.rs:670:21
[INFO] [stdout]     |
[INFO] [stdout] 670 |             prefix: None,
[INFO] [stdout]     |                     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
[INFO] [stdout]     = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lox-rust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "a15b2324691d377c4a4b80c91e55b5d8156ac995f77c5b73c6db2cb96c99f7e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a15b2324691d377c4a4b80c91e55b5d8156ac995f77c5b73c6db2cb96c99f7e2", kill_on_drop: false }`
[INFO] [stdout] a15b2324691d377c4a4b80c91e55b5d8156ac995f77c5b73c6db2cb96c99f7e2