[INFO] cloning repository https://github.com/Nadrieril/dictionary-passing-lambda-calculus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nadrieril/dictionary-passing-lambda-calculus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNadrieril%2Fdictionary-passing-lambda-calculus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNadrieril%2Fdictionary-passing-lambda-calculus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4062d8d151b043791582c3c6b681d83bf3db0b47
[INFO] checking Nadrieril/dictionary-passing-lambda-calculus against 1.94.0 for beta-1.95-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNadrieril%2Fdictionary-passing-lambda-calculus" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Nadrieril/dictionary-passing-lambda-calculus
[INFO] finished tweaking git repo https://github.com/Nadrieril/dictionary-passing-lambda-calculus
[INFO] tweaked toml for git repo https://github.com/Nadrieril/dictionary-passing-lambda-calculus written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Nadrieril/dictionary-passing-lambda-calculus on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Nadrieril/dictionary-passing-lambda-calculus 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" "+1.94.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-as-inner v0.7.0
[INFO] [stderr]   Downloaded internment v0.8.6
[INFO] [stderr]   Downloaded ustr v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+1.94.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9078b800318c15ac3310190a1f1ab01d202a5e2c0e4aaaa772139cc889ded57f
[INFO] running `Command { std: "docker" "start" "-a" "9078b800318c15ac3310190a1f1ab01d202a5e2c0e4aaaa772139cc889ded57f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9078b800318c15ac3310190a1f1ab01d202a5e2c0e4aaaa772139cc889ded57f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9078b800318c15ac3310190a1f1ab01d202a5e2c0e4aaaa772139cc889ded57f", kill_on_drop: false }`
[INFO] [stdout] 9078b800318c15ac3310190a1f1ab01d202a5e2c0e4aaaa772139cc889ded57f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.94.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4588af00345ef304b30333a5a7ef063f7170fe59d56896ba2bb51b0116cc88cb
[INFO] running `Command { std: "docker" "start" "-a" "4588af00345ef304b30333a5a7ef063f7170fe59d56896ba2bb51b0116cc88cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling zerocopy v0.8.47
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]    Compiling stacker v0.1.23
[INFO] [stderr]     Checking bytecount v0.6.9
[INFO] [stderr]     Checking anstyle v1.0.14
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking internment v0.8.6
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking annotate-snippets v0.12.13
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking nom v8.0.0
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling enum-as-inner v0.7.0
[INFO] [stderr]     Checking nom_locate v5.0.0
[INFO] [stderr]    Compiling ar_archive_writer v0.5.1
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]    Compiling psm v0.1.30
[INFO] [stderr]     Checking ustr v1.1.0
[INFO] [stderr]     Checking dictionary-passing-lambda-calculus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: `if let` guards are experimental
[INFO] [stdout]    --> src/semantics.rs:997:31
[INFO] [stdout]     |
[INFO] [stdout] 997 |                 Some(binding) if let Some(val) = binding.value(unfold_nominal).cloned() => {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #51114 <https://github.com/rust-lang/rust/issues/51114> for more information
[INFO] [stdout]     = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `if let` guards are experimental
[INFO] [stdout]    --> src/syntax.rs:230:30
[INFO] [stdout]     |
[INFO] [stdout] 230 |                     Some(ty) if let Pi(_, _, _, mentions) = ty.kind() => mentions.clone(),
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #51114 <https://github.com/rust-lang/rust/issues/51114> for more information
[INFO] [stdout]     = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `if let` guards are experimental
[INFO] [stdout]    --> src/semantics.rs:997:31
[INFO] [stdout]     |
[INFO] [stdout] 997 |                 Some(binding) if let Some(val) = binding.value(unfold_nominal).cloned() => {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #51114 <https://github.com/rust-lang/rust/issues/51114> for more information
[INFO] [stdout]     = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `if let` guards are experimental
[INFO] [stdout]    --> src/syntax.rs:230:30
[INFO] [stdout]     |
[INFO] [stdout] 230 |                     Some(ty) if let Pi(_, _, _, mentions) = ty.kind() => mentions.clone(),
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #51114 <https://github.com/rust-lang/rust/issues/51114> for more information
[INFO] [stdout]     = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dictionary-passing-lambda-calculus` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dictionary-passing-lambda-calculus` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4588af00345ef304b30333a5a7ef063f7170fe59d56896ba2bb51b0116cc88cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4588af00345ef304b30333a5a7ef063f7170fe59d56896ba2bb51b0116cc88cb", kill_on_drop: false }`
[INFO] [stdout] 4588af00345ef304b30333a5a7ef063f7170fe59d56896ba2bb51b0116cc88cb