[INFO] fetching crate onlang 0.6.0...
[INFO] checking onlang-0.6.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate onlang 0.6.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate onlang 0.6.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate onlang 0.6.0
[INFO] finished tweaking crates.io crate onlang 0.6.0
[INFO] tweaked toml for crates.io crate onlang 0.6.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate onlang 0.6.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_generator v2.2.1
[INFO] [stderr]   Downloaded pest_derive v2.2.1
[INFO] [stderr]   Downloaded serde_yaml v0.9.9
[INFO] [stderr]   Downloaded clap_derive v3.2.17
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.2
[INFO] [stderr]   Downloaded libc v0.2.131
[INFO] [stderr]   Downloaded pest v2.2.1
[INFO] [stderr]   Downloaded pest_meta v2.2.1
[INFO] [stderr]   Downloaded rmp-serde v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b704ccf64099c64de56e454b6904a2135e2c24a03b46fe4c9ddaebe8a583a33f
[INFO] running `Command { std: "docker" "start" "-a" "b704ccf64099c64de56e454b6904a2135e2c24a03b46fe4c9ddaebe8a583a33f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b704ccf64099c64de56e454b6904a2135e2c24a03b46fe4c9ddaebe8a583a33f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b704ccf64099c64de56e454b6904a2135e2c24a03b46fe4c9ddaebe8a583a33f", kill_on_drop: false }`
[INFO] [stdout] b704ccf64099c64de56e454b6904a2135e2c24a03b46fe4c9ddaebe8a583a33f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa89cf9a34e9f94525ce0297d0854d996b5d50e89b461740e242c6a19ca3f074
[INFO] running `Command { std: "docker" "start" "-a" "fa89cf9a34e9f94525ce0297d0854d996b5d50e89b461740e242c6a19ca3f074", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.143
[INFO] [stderr]    Compiling serde v1.0.143
[INFO] [stderr]    Compiling libc v0.2.131
[INFO] [stderr]    Compiling ucd-trie v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling paste v1.0.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking unsafe-libyaml v0.2.2
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking rmp v0.8.11
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]    Compiling clap_derive v3.2.17
[INFO] [stderr]    Compiling thiserror v1.0.32
[INFO] [stderr]    Compiling pest v2.2.1
[INFO] [stderr]     Checking clap v3.2.17
[INFO] [stderr]    Compiling pest_meta v2.2.1
[INFO] [stderr]    Compiling pest_generator v2.2.1
[INFO] [stderr]    Compiling pest_derive v2.2.1
[INFO] [stderr]     Checking json5 v0.4.1
[INFO] [stderr]     Checking serde_yaml v0.9.9
[INFO] [stderr]     Checking rmp-serde v1.1.0
[INFO] [stderr]     Checking onlang v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `json5` is imported redundantly
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use json5;
[INFO] [stdout]   |     ^^^^^ the item `json5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `json5` is imported redundantly
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use json5;
[INFO] [stdout]   |     ^^^^^ the item `json5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `toNumber` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:397:8
[INFO] [stdout]     |
[INFO] [stdout] 397 |     fn toNumber(&mut self, value: &Value) -> Value {
[INFO] [stdout]     |        ^^^^^^^^ help: convert the identifier to snake case: `to_number`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `toNumber` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:397:8
[INFO] [stdout]     |
[INFO] [stdout] 397 |     fn toNumber(&mut self, value: &Value) -> Value {
[INFO] [stdout]     |        ^^^^^^^^ help: convert the identifier to snake case: `to_number`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.63s
[INFO] running `Command { std: "docker" "inspect" "fa89cf9a34e9f94525ce0297d0854d996b5d50e89b461740e242c6a19ca3f074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa89cf9a34e9f94525ce0297d0854d996b5d50e89b461740e242c6a19ca3f074", kill_on_drop: false }`
[INFO] [stdout] fa89cf9a34e9f94525ce0297d0854d996b5d50e89b461740e242c6a19ca3f074