[INFO] cloning repository https://github.com/ltfschoen/RustTest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ltfschoen/RustTest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fltfschoen%2FRustTest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fltfschoen%2FRustTest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc9b2ed2b9e4d470c10313affe2240c112b6882a
[INFO] testing ltfschoen/RustTest against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fltfschoen%2FRustTest" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/ltfschoen/RustTest
[INFO] finished tweaking git repo https://github.com/ltfschoen/RustTest
[INFO] tweaked toml for git repo https://github.com/ltfschoen/RustTest written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ltfschoen/RustTest on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ltfschoen/RustTest 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /workspace/builds/worker-2-tc2/source/projects/datetime/Cargo.toml: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `chrono` dependency)
[INFO] [stderr] warning: /workspace/builds/worker-2-tc2/source/projects/datetime/Cargo.toml: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `env_logger` dependency)
[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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d02b3882698bae17e6f83dd9da915452b831d8aa0a1c6a02a4776ecdf72d4b33
[INFO] running `Command { std: "docker" "start" "-a" "d02b3882698bae17e6f83dd9da915452b831d8aa0a1c6a02a4776ecdf72d4b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d02b3882698bae17e6f83dd9da915452b831d8aa0a1c6a02a4776ecdf72d4b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d02b3882698bae17e6f83dd9da915452b831d8aa0a1c6a02a4776ecdf72d4b33", kill_on_drop: false }`
[INFO] [stdout] d02b3882698bae17e6f83dd9da915452b831d8aa0a1c6a02a4776ecdf72d4b33
[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=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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0784b462da3afd4245df8c29b92a7f9beb5734b5dcbf6fb2a957066a17af6c1
[INFO] running `Command { std: "docker" "start" "-a" "a0784b462da3afd4245df8c29b92a7f9beb5734b5dcbf6fb2a957066a17af6c1", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /opt/rustwide/workdir/projects/datetime/Cargo.toml: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `chrono` dependency)
[INFO] [stderr] warning: /opt/rustwide/workdir/projects/datetime/Cargo.toml: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `env_logger` dependency)
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling futures-sink v0.3.26
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling futures-task v0.3.26
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]    Compiling futures-io v0.3.26
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stderr]    Compiling winnow v0.3.4
[INFO] [stderr]    Compiling toml_datetime v0.6.1
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling anyhow v1.0.69
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling regex v1.7.1
[INFO] [stderr]    Compiling byte-slice-cast v1.2.2
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling httparse v1.9.5
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling sp-std v4.0.0-dev (https://github.com/paritytech/substrate?branch=polkadot-v0.9.13#afb74de2)
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling miniz_oxide v0.8.2
[INFO] [stderr]    Compiling libsecp256k1-core v0.3.0
[INFO] [stderr]    Compiling bitvec v0.20.4
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling syn v2.0.95
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling cc v1.2.7
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling socket2 v0.4.10
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling indexmap v2.7.0
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling iana-time-zone v0.1.53
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling ref-cast v1.0.15
[INFO] [stderr]    Compiling litemap v0.7.4
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling flate2 v1.0.35
[INFO] [stderr]    Compiling chrono v0.4.23
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling fixed-hash v0.7.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling parity-wasm v0.42.2
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling libsecp256k1-gen-genmult v0.3.0
[INFO] [stderr]    Compiling libsecp256k1-gen-ecmult v0.3.0
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling hmac v0.8.1
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling crypto-mac v0.11.1
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling memory_units v0.3.0
[INFO] [stderr]    Compiling keccak v0.1.3
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling toml_edit v0.19.4
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling hash-db v0.15.2
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.0
[INFO] [stderr]    Compiling parity-util-mem v0.10.2
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling libsecp256k1 v0.7.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling environmental v1.1.4
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling icu_properties_data v1.5.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling signature v1.6.4
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling ed25519 v1.5.3
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]    Compiling pbkdf2 v0.8.0
[INFO] [stderr]    Compiling hmac v0.11.0
[INFO] [stderr]    Compiling hmac-drbg v0.3.0
[INFO] [stderr]    Compiling twox-hash v1.6.3
[INFO] [stderr]    Compiling pbkdf2 v0.4.0
[INFO] [stderr]    Compiling num-format v0.4.4
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling dyn-clone v1.0.11
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.0
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]    Compiling sp-core-hashing v4.0.0-dev (https://github.com/paritytech/substrate?branch=polkadot-v0.9.13#afb74de2)
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling hash256-std-hasher v0.15.2
[INFO] [stderr]    Compiling base58 v0.2.0
[INFO] [stderr]    Compiling wasmi-validation v0.4.1
[INFO] [stderr]    Compiling gimli v0.27.2
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]    Compiling axum-core v0.3.4
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling async-lock v2.8.0
[INFO] [stderr]    Compiling wasmi v0.9.1
[INFO] [stderr]    Compiling object v0.30.3
[INFO] [stderr]    Compiling futures-timer v3.0.3
[INFO] [stderr]    Compiling rustls-native-certs v0.6.3
[INFO] [stderr]    Compiling hdrhistogram v7.5.4
[INFO] [stderr]    Compiling axum v0.6.20
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling trie-root v0.16.0
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling rlp v0.5.2
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling zstd-safe v7.2.1
[INFO] [stderr]    Compiling uint v0.2.1
[INFO] [stderr]    Compiling fixed-hash v0.8.0
[INFO] [stderr]    Compiling matchit v0.7.3
[INFO] [stderr]    Compiling brotli-decompressor v4.0.1
[INFO] [stderr]    Compiling fixed-hash v0.2.5
[INFO] [stderr]    Compiling ethereum-types v0.3.2
[INFO] [stderr]    Compiling impl-rlp v0.3.0
[INFO] [stderr]    Compiling tiny-keccak v1.5.0
[INFO] [stderr]    Compiling rustc-hex v1.0.0
[INFO] [stderr]    Compiling paste v1.0.12
[INFO] [stderr]    Compiling matchers v0.1.0
[INFO] [stderr]    Compiling integer-sqrt v0.1.5
[INFO] [stderr]    Compiling route-recognizer v0.3.1
[INFO] [stderr]    Compiling ethcore-bytes v0.1.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.14
[INFO] [stderr]    Compiling clang v0.0.2 (/opt/rustwide/workdir/projects/clang)
[INFO] [stderr]    Compiling uuid v1.11.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling indextree v1.3.0
[INFO] [stderr]    Compiling http-range-header v0.3.1
[INFO] [stderr]    Compiling iri-string v0.7.7
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling communicator v0.1.0 (/opt/rustwide/workdir/projects/communicator)
[INFO] [stderr]    Compiling closures v0.1.0 (/opt/rustwide/workdir/projects/closures)
[INFO] [stderr]    Compiling lifetimes v0.1.0 (/opt/rustwide/workdir/projects/lifetimes)
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stdout] warning: unused variable: `closure_1`
[INFO] [stdout]  --> projects/closures/src/play/play.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let closure_1 = |x: u32| -> u32 {
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_closure_1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `closure_2`
[INFO] [stdout]  --> projects/closures/src/play/play.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let closure_2 = |x: u32| -> u32 { x + 1 };
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_closure_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_1` is never used
[INFO] [stdout]   --> projects/closures/src/play/play.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn  function_1 (x: u32) -> u32 { x + 1 }
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling generics v0.1.0 (/opt/rustwide/workdir/projects/generics)
[INFO] [stdout] warning: useless assignment of variable of type `String` to itself
[INFO] [stdout]   --> projects/generics/src/examples/enum_definitions.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         user_input = user_input;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]  --> projects/generics/src/examples/struct_definitions.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Point<T, U> {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 5 |     x: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 6 |     y: U,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]  --> projects/generics/src/examples/method_definitions.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point<T> {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 2 |     x: T,
[INFO] [stdout] 3 |     y: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `T` should have a snake case name
[INFO] [stdout]   --> projects/generics/src/examples/enum_definitions.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Ok(T) => { println!("Success: {:?}", T); T; },
[INFO] [stdout]    |                ^ help: convert the identifier to snake case: `t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement with no effect
[INFO] [stdout]   --> projects/generics/src/examples/enum_definitions.rs:17:54
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Ok(T) => { println!("Success: {:?}", T); T; },
[INFO] [stdout]    |                                                      ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `E` should have a snake case name
[INFO] [stdout]   --> projects/generics/src/examples/enum_definitions.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |             Err(E) => { println!("Error: {:?}", E); E; }
[INFO] [stdout]    |                 ^ help: convert the identifier to snake case: `e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement with no effect
[INFO] [stdout]   --> projects/generics/src/examples/enum_definitions.rs:18:53
[INFO] [stdout]    |
[INFO] [stdout] 18 |             Err(E) => { println!("Error: {:?}", E); E; }
[INFO] [stdout]    |                                                     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling languages v0.0.1 (/opt/rustwide/workdir/projects/languages)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> projects/languages/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling traits_shapes v0.1.0 (/opt/rustwide/workdir/projects/traits_shapes)
[INFO] [stderr] error: could not compile `languages` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a0784b462da3afd4245df8c29b92a7f9beb5734b5dcbf6fb2a957066a17af6c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0784b462da3afd4245df8c29b92a7f9beb5734b5dcbf6fb2a957066a17af6c1", kill_on_drop: false }`
[INFO] [stdout] a0784b462da3afd4245df8c29b92a7f9beb5734b5dcbf6fb2a957066a17af6c1
