[INFO] cloning repository https://github.com/JonathanArns/skim-lisp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JonathanArns/skim-lisp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanArns%2Fskim-lisp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanArns%2Fskim-lisp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 425f7772ad3ea2f1a55a8bb95bdce7b268168396
[INFO] checking JonathanArns/skim-lisp/425f7772ad3ea2f1a55a8bb95bdce7b268168396 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanArns%2Fskim-lisp" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JonathanArns/skim-lisp on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JonathanArns/skim-lisp
[INFO] finished tweaking git repo https://github.com/JonathanArns/skim-lisp
[INFO] tweaked toml for git repo https://github.com/JonathanArns/skim-lisp written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JonathanArns/skim-lisp 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c413a32cc38efa50d4687b5be2955bd6e2a8c1a0e243ab829d1fdc27b87a36fb
[INFO] running `Command { std: "docker" "start" "-a" "c413a32cc38efa50d4687b5be2955bd6e2a8c1a0e243ab829d1fdc27b87a36fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c413a32cc38efa50d4687b5be2955bd6e2a8c1a0e243ab829d1fdc27b87a36fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c413a32cc38efa50d4687b5be2955bd6e2a8c1a0e243ab829d1fdc27b87a36fb", kill_on_drop: false }`
[INFO] [stdout] c413a32cc38efa50d4687b5be2955bd6e2a8c1a0e243ab829d1fdc27b87a36fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 329d6f7802bd34a097bc85d039779eb51b98a51681dd0dccbb7c3e518cb8e8ca
[INFO] running `Command { std: "docker" "start" "-a" "329d6f7802bd34a097bc85d039779eb51b98a51681dd0dccbb7c3e518cb8e8ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking dirs-sys-next v0.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs-next v1.0.1
[INFO] [stderr]     Checking rustyline v6.3.0
[INFO] [stderr]     Checking skim-lisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `AtLeast` is never constructed
[INFO] [stdout]   --> src/Exception.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub enum Arity {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] 15 |     Exact(usize),
[INFO] [stdout] 16 |     AtLeast(usize),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Arity` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Char`, `String`, and `Vector` are never constructed
[INFO] [stdout]   --> src/ast.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum Exp {
[INFO] [stdout]    |          --- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 25 |     Char(char),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 26 |     Symbol(String),
[INFO] [stdout] 27 |     String(String),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 28 |     Vector(Vec<Exp>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Exp` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Exception` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) mod Exception;
[INFO] [stdout]   |                ^^^^^^^^^ help: convert the identifier to snake case: `exception`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `AtLeast` is never constructed
[INFO] [stdout]   --> src/Exception.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub enum Arity {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] 15 |     Exact(usize),
[INFO] [stdout] 16 |     AtLeast(usize),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Arity` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Char`, `String`, and `Vector` are never constructed
[INFO] [stdout]   --> src/ast.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum Exp {
[INFO] [stdout]    |          --- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 25 |     Char(char),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 26 |     Symbol(String),
[INFO] [stdout] 27 |     String(String),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 28 |     Vector(Vec<Exp>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Exp` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Exception` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub(crate) mod Exception;
[INFO] [stdout]   |                ^^^^^^^^^ help: convert the identifier to snake case: `exception`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.75s
[INFO] running `Command { std: "docker" "inspect" "329d6f7802bd34a097bc85d039779eb51b98a51681dd0dccbb7c3e518cb8e8ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329d6f7802bd34a097bc85d039779eb51b98a51681dd0dccbb7c3e518cb8e8ca", kill_on_drop: false }`
[INFO] [stdout] 329d6f7802bd34a097bc85d039779eb51b98a51681dd0dccbb7c3e518cb8e8ca