[INFO] cloning repository https://github.com/KeenS/rustlisp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KeenS/rustlisp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeenS%2Frustlisp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeenS%2Frustlisp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 682e52c77065c2161d293bcfdf32f3c1203a2e4c
[INFO] testing KeenS/rustlisp against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeenS%2Frustlisp" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KeenS/rustlisp on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KeenS/rustlisp
[INFO] finished tweaking git repo https://github.com/KeenS/rustlisp
[INFO] tweaked toml for git repo https://github.com/KeenS/rustlisp written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/KeenS/rustlisp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5ccb667e0241bce2e0fbfb98e964e80f39edb8181eef3713392bc892bd0c19dd
[INFO] running `Command { std: "docker" "start" "-a" "5ccb667e0241bce2e0fbfb98e964e80f39edb8181eef3713392bc892bd0c19dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ccb667e0241bce2e0fbfb98e964e80f39edb8181eef3713392bc892bd0c19dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ccb667e0241bce2e0fbfb98e964e80f39edb8181eef3713392bc892bd0c19dd", kill_on_drop: false }`
[INFO] [stdout] 5ccb667e0241bce2e0fbfb98e964e80f39edb8181eef3713392bc892bd0c19dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cf52ede67801c5697d9e2e27a7f6069a73a7940181963f32e2bc6eb106a3324
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2cf52ede67801c5697d9e2e27a7f6069a73a7940181963f32e2bc6eb106a3324", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustlisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/expr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/eval.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env::*`
[INFO] [stdout]  --> src/eval.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use env::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cons::*`
[INFO] [stdout]  --> src/eval.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use cons::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `expr::*`
[INFO] [stdout]  --> src/user.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use expr::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `eval::*`
[INFO] [stdout]  --> src/user.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use eval::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type parameter `N1_O` should have an upper camel case name
[INFO] [stdout]   --> src/user.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stdout]    |                 ^^^^ help: convert the identifier to upper camel case: `N1O`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type parameter `N2_O` should have an upper camel case name
[INFO] [stdout]   --> src/user.rs:17:28
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stdout]    |                            ^^^^ help: convert the identifier to upper camel case: `N2O`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub type Stack1<T1: Expr> = Stack<T1, Bottom>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 11 - pub type Stack1<T1: Expr> = Stack<T1, Bottom>;
[INFO] [stdout] 11 + pub type Stack1<T1> = Stack<T1, Bottom>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:12:21
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 12 - pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout] 12 + pub type Stack2<T1, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 12 - pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout] 12 + pub type Stack2<T1: Expr, T2> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:31
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1: Expr, T2, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:41
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                                         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1: Expr, T2: Expr, T3> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:41
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                                         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2: Expr, T3, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:51
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustlisp::eval::*`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rustlisp::eval::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustlisp::symbol`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustlisp::symbol::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `Command { std: "docker" "inspect" "2cf52ede67801c5697d9e2e27a7f6069a73a7940181963f32e2bc6eb106a3324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cf52ede67801c5697d9e2e27a7f6069a73a7940181963f32e2bc6eb106a3324", kill_on_drop: false }`
[INFO] [stdout] 2cf52ede67801c5697d9e2e27a7f6069a73a7940181963f32e2bc6eb106a3324
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94bc036dc317855087c2b35251e397258089a233ed93089c036cc45e2d388948
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "94bc036dc317855087c2b35251e397258089a233ed93089c036cc45e2d388948", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustlisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/expr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/eval.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env::*`
[INFO] [stdout]  --> src/eval.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use env::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cons::*`
[INFO] [stdout]  --> src/eval.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use cons::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `expr::*`
[INFO] [stdout]  --> src/user.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use expr::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `eval::*`
[INFO] [stdout]  --> src/user.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use eval::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type parameter `N1_O` should have an upper camel case name
[INFO] [stdout]   --> src/user.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stdout]    |                 ^^^^ help: convert the identifier to upper camel case: `N1O`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type parameter `N2_O` should have an upper camel case name
[INFO] [stdout]   --> src/user.rs:17:28
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stdout]    |                            ^^^^ help: convert the identifier to upper camel case: `N2O`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub type Stack1<T1: Expr> = Stack<T1, Bottom>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 11 - pub type Stack1<T1: Expr> = Stack<T1, Bottom>;
[INFO] [stdout] 11 + pub type Stack1<T1> = Stack<T1, Bottom>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:12:21
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 12 - pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout] 12 + pub type Stack2<T1, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 12 - pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout] 12 + pub type Stack2<T1: Expr, T2> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:31
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1: Expr, T2, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:41
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                                         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1: Expr, T2: Expr, T3> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:41
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                                         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2: Expr, T3, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:51
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/expr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/eval.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env::*`
[INFO] [stdout]  --> src/eval.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use env::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cons::*`
[INFO] [stdout]  --> src/eval.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use cons::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `expr::*`
[INFO] [stdout]  --> src/user.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use expr::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `eval::*`
[INFO] [stdout]  --> src/user.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use eval::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type parameter `N1_O` should have an upper camel case name
[INFO] [stdout]   --> src/user.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stdout]    |                 ^^^^ help: convert the identifier to upper camel case: `N1O`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type parameter `N2_O` should have an upper camel case name
[INFO] [stdout]   --> src/user.rs:17:28
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stdout]    |                            ^^^^ help: convert the identifier to upper camel case: `N2O`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustlisp::eval::*`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rustlisp::eval::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustlisp::symbol`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustlisp::symbol::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub type Stack1<T1: Expr> = Stack<T1, Bottom>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 11 - pub type Stack1<T1: Expr> = Stack<T1, Bottom>;
[INFO] [stdout] 11 + pub type Stack1<T1> = Stack<T1, Bottom>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:12:21
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 12 - pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout] 12 + pub type Stack2<T1, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 12 - pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stdout] 12 + pub type Stack2<T1: Expr, T2> = Stack<T1, Stack1<T2>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:31
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1: Expr, T2, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:13:41
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    |                                         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout] 13 + pub type Stack3<T1: Expr, T2: Expr, T3> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:41
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                                         ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2: Expr, T3, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stdout]   --> src/env.rs:14:51
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    |                                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout] 14 + pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "94bc036dc317855087c2b35251e397258089a233ed93089c036cc45e2d388948", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94bc036dc317855087c2b35251e397258089a233ed93089c036cc45e2d388948", kill_on_drop: false }`
[INFO] [stdout] 94bc036dc317855087c2b35251e397258089a233ed93089c036cc45e2d388948
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41cdf9b0e58d6e9c786754e5d3a913820eacbcbc81a6b2825adc6915ea79960f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "41cdf9b0e58d6e9c786754e5d3a913820eacbcbc81a6b2825adc6915ea79960f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::marker::PhantomData`
[INFO] [stderr]  --> src/lib.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::marker::PhantomData;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::marker::PhantomData`
[INFO] [stderr]  --> src/expr.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::marker::PhantomData;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::marker::PhantomData`
[INFO] [stderr]  --> src/eval.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::marker::PhantomData;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `env::*`
[INFO] [stderr]  --> src/eval.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use env::*;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `cons::*`
[INFO] [stderr]  --> src/eval.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use cons::*;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `expr::*`
[INFO] [stderr]  --> src/user.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use expr::*;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `eval::*`
[INFO] [stderr]  --> src/user.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use eval::*;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type parameter `N1_O` should have an upper camel case name
[INFO] [stderr]   --> src/user.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stderr]    |                 ^^^^ help: convert the identifier to upper camel case: `N1O`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type parameter `N2_O` should have an upper camel case name
[INFO] [stderr]   --> src/user.rs:17:28
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stderr]    |                            ^^^^ help: convert the identifier to upper camel case: `N2O`
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:11:21
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub type Stack1<T1: Expr> = Stack<T1, Bottom>;
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 11 - pub type Stack1<T1: Expr> = Stack<T1, Bottom>;
[INFO] [stderr] 11 + pub type Stack1<T1> = Stack<T1, Bottom>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 12 - pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stderr] 12 + pub type Stack2<T1, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:12:31
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stderr]    |                               ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 12 - pub type Stack2<T1: Expr, T2: Expr> = Stack<T1, Stack1<T2>>;
[INFO] [stderr] 12 + pub type Stack2<T1: Expr, T2> = Stack<T1, Stack1<T2>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:13:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr] 13 + pub type Stack3<T1, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:13:31
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr]    |                               ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr] 13 + pub type Stack3<T1: Expr, T2, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:13:41
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr]    |                                         ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 13 - pub type Stack3<T1: Expr, T2: Expr, T3: Expr> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr] 13 + pub type Stack3<T1: Expr, T2: Expr, T3> = Stack<T1, Stack2<T2, T3>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr] 14 + pub type Stack4<T1, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr]    |                               ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr] 14 + pub type Stack4<T1: Expr, T2, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:14:41
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr]    |                                         ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr] 14 + pub type Stack4<T1: Expr, T2: Expr, T3, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/env.rs:14:51
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr]    |                                                   ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr]    |
[INFO] [stderr] 14 - pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4: Expr> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr] 14 + pub type Stack4<T1: Expr, T2: Expr, T3: Expr, T4> = Stack<T1, Stack3<T2, T3, T4>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `rustlisp` (lib) generated 19 warnings
[INFO] [stderr] warning: `rustlisp` (lib test) generated 19 warnings (19 duplicates)
[INFO] [stderr] warning: unused import: `rustlisp::eval::*`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rustlisp::eval::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rustlisp::symbol`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rustlisp::symbol::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rustlisp` (bin "rustlisp" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustlisp-8cdd9359f68f0a0b)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustlisp-78dcfb0b853ea12c)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustlisp
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] warning: type parameter `N1_O` should have an upper camel case name
[INFO] [stderr]   --> /opt/rustwide/workdir/src/user.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stderr]    |                 ^^^^ help: convert the identifier to upper camel case: `N1O`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type parameter `N2_O` should have an upper camel case name
[INFO] [stderr]   --> /opt/rustwide/workdir/src/user.rs:17:28
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl <T1N: Num, N1_O: Num, N2_O: Num, NO: Num>Fun1<Number<Succ<Succ<T1N>>>> for Fib
[INFO] [stderr]    |                            ^^^^ help: convert the identifier to upper camel case: `N2O`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "41cdf9b0e58d6e9c786754e5d3a913820eacbcbc81a6b2825adc6915ea79960f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41cdf9b0e58d6e9c786754e5d3a913820eacbcbc81a6b2825adc6915ea79960f", kill_on_drop: false }`
[INFO] [stdout] 41cdf9b0e58d6e9c786754e5d3a913820eacbcbc81a6b2825adc6915ea79960f