[INFO] fetching crate larn 0.1.2...
[INFO] fixing larn-0.1.2 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] extracting crate larn 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate larn 0.1.2
[INFO] finished tweaking crates.io crate larn 0.1.2
[INFO] tweaked toml for crates.io crate larn 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate larn 0.1.2 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate larn 0.1.2 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytes v1.7.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.88
[INFO] [stderr]   Downloaded native-tls v0.2.12
[INFO] [stderr]   Downloaded security-framework-sys v2.12.0
[INFO] [stderr]   Downloaded schannel v0.1.26
[INFO] [stderr]   Downloaded openssl-sys v0.9.104
[INFO] [stderr]   Downloaded cc v1.1.31
[INFO] [stderr]   Downloaded h2 v0.4.6
[INFO] [stderr]   Downloaded syn v2.0.81
[INFO] [stderr]   Downloaded redis v0.27.5
[INFO] [stderr]   Downloaded openssl v0.10.68
[INFO] [stderr]   Downloaded rustls v0.23.15
[INFO] [stderr]   Downloaded tokio v1.40.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 03b06a5b3c1613ee93ad7d90055c806bc38b386fb2a651fb6ae3812e5bc73cc4
[INFO] running `Command { std: "docker" "start" "03b06a5b3c1613ee93ad7d90055c806bc38b386fb2a651fb6ae3812e5bc73cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "03b06a5b3c1613ee93ad7d90055c806bc38b386fb2a651fb6ae3812e5bc73cc4" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03b06a5b3c1613ee93ad7d90055c806bc38b386fb2a651fb6ae3812e5bc73cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "03b06a5b3c1613ee93ad7d90055c806bc38b386fb2a651fb6ae3812e5bc73cc4" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling proc-macro2 v1.0.88
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]     Checking bytes v1.7.2
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling cc v1.1.31
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling openssl v0.10.68
[INFO] [stderr]     Checking hashbrown v0.15.0
[INFO] [stderr]     Checking tinyvec v1.8.0
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking unicode-bidi v0.3.17
[INFO] [stderr]     Checking anstyle-parse v0.2.5
[INFO] [stderr]     Checking colorchoice v1.0.2
[INFO] [stderr]     Checking anstyle-query v1.1.1
[INFO] [stderr]     Checking anstyle v1.0.8
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]     Checking clap_lex v0.7.2
[INFO] [stderr]     Checking rustls-pki-types v1.10.0
[INFO] [stderr]     Checking encoding_rs v0.8.34
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking combine v4.6.7
[INFO] [stderr]     Checking anstream v0.6.15
[INFO] [stderr]     Checking arc-swap v1.7.1
[INFO] [stderr]     Checking ipnet v2.10.1
[INFO] [stderr]     Checking indexmap v2.6.0
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking clap_builder v4.5.20
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]    Compiling syn v2.0.81
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking http-body-util v0.1.2
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stderr]     Checking redis v0.27.5
[INFO] [stderr]     Checking clap v4.5.20
[INFO] [stderr]     Checking tokio-util v0.7.12
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking h2 v0.4.6
[INFO] [stderr]     Checking hyper v1.5.0
[INFO] [stderr]     Checking hyper-util v0.1.9
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking reqwest v0.12.8
[INFO] [stderr]     Checking larn v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/commands/learn.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout]  5 | fn retrieve_feedback() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> src/commands/learn.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |             con.del(&key)?;  
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 21 |             con.del::<_, ()>(&key)?;  
[INFO] [stdout]    |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/commands/learn.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout]  5 | fn retrieve_feedback() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> src/commands/learn.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |             con.del(&key)?;  
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 21 |             con.del::<_, ()>(&key)?;  
[INFO] [stdout]    |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `larn` (bin "larn") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `larn` (bin "larn" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "03b06a5b3c1613ee93ad7d90055c806bc38b386fb2a651fb6ae3812e5bc73cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b06a5b3c1613ee93ad7d90055c806bc38b386fb2a651fb6ae3812e5bc73cc4", kill_on_drop: false }`
[INFO] [stdout] 03b06a5b3c1613ee93ad7d90055c806bc38b386fb2a651fb6ae3812e5bc73cc4
