[INFO] cloning repository https://github.com/jroesch/molten
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jroesch/molten" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjroesch%2Fmolten", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjroesch%2Fmolten'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de57629d7b02e0fdf851804306bee2679520855d
[INFO] testing jroesch/molten against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjroesch%2Fmolten" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jroesch/molten on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jroesch/molten
[INFO] finished tweaking git repo https://github.com/jroesch/molten
[INFO] tweaked toml for git repo https://github.com/jroesch/molten written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/jroesch/molten already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24c137c86672400ef3758252c47a78468cea1dc61977bff8676c0d8735f99206
[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" "24c137c86672400ef3758252c47a78468cea1dc61977bff8676c0d8735f99206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24c137c86672400ef3758252c47a78468cea1dc61977bff8676c0d8735f99206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24c137c86672400ef3758252c47a78468cea1dc61977bff8676c0d8735f99206", kill_on_drop: false }`
[INFO] [stdout] 24c137c86672400ef3758252c47a78468cea1dc61977bff8676c0d8735f99206
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31caf74b66d57b930edbff1838b80fe2cade670c43865a7c2daab0df492ca687
[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" "31caf74b66d57b930edbff1838b80fe2cade670c43865a7c2daab0df492ca687", kill_on_drop: false }`
[INFO] [stderr]    Compiling molten v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hlist.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(self.0.fmt(fmt)); self.1.fmt(fmt)
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FnMut`, `Fn`
[INFO] [stdout]  --> src/poly.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Fn, FnMut, FnOnce};
[INFO] [stdout]   |                ^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hlist::*`
[INFO] [stdout]  --> src/tuple.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hlist::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `headOption`
[INFO] [stdout]   --> src/poly.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct headOption;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `size`
[INFO] [stdout]   --> src/poly.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct size;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `type_macros` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_macros)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "31caf74b66d57b930edbff1838b80fe2cade670c43865a7c2daab0df492ca687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31caf74b66d57b930edbff1838b80fe2cade670c43865a7c2daab0df492ca687", kill_on_drop: false }`
[INFO] [stdout] 31caf74b66d57b930edbff1838b80fe2cade670c43865a7c2daab0df492ca687
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f72253cda936025500635495e18c874c51898f1ef632680967cc382c154c7f3
[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" "4f72253cda936025500635495e18c874c51898f1ef632680967cc382c154c7f3", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hlist.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(self.0.fmt(fmt)); self.1.fmt(fmt)
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling molten v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `FnMut`, `Fn`
[INFO] [stdout]  --> src/poly.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Fn, FnMut, FnOnce};
[INFO] [stdout]   |                ^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hlist::*`
[INFO] [stdout]  --> src/tuple.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hlist::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `headOption`
[INFO] [stdout]   --> src/poly.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct headOption;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `size`
[INFO] [stdout]   --> src/poly.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct size;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `type_macros` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_macros)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hlist.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(self.0.fmt(fmt)); self.1.fmt(fmt)
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FnMut`, `Fn`
[INFO] [stdout]  --> src/poly.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Fn, FnMut, FnOnce};
[INFO] [stdout]   |                ^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hlist::*`
[INFO] [stdout]  --> src/tuple.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hlist::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> tests/tests.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let point = Point { x: 0, y: 0 };
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/poly.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let x = singleton(10);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/poly.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let y = singleton("hello");
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]  --> tests/tests.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     x: i32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]  --> tests/tests.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     y: i32
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_generic_point`
[INFO] [stdout]   --> tests/tests.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn test_generic_point() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `type_macros` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> tests/tests.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(type_macros)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `headOption`
[INFO] [stdout]   --> src/poly.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct headOption;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `size`
[INFO] [stdout]   --> src/poly.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct size;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `type_macros` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_macros)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "4f72253cda936025500635495e18c874c51898f1ef632680967cc382c154c7f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f72253cda936025500635495e18c874c51898f1ef632680967cc382c154c7f3", kill_on_drop: false }`
[INFO] [stdout] 4f72253cda936025500635495e18c874c51898f1ef632680967cc382c154c7f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 73f338a0fb4ae04629223b632cb138a2aa2ff5cfc69cb597fc92aa09e6aa741a
[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" "73f338a0fb4ae04629223b632cb138a2aa2ff5cfc69cb597fc92aa09e6aa741a", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hlist.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         try!(self.0.fmt(fmt)); self.1.fmt(fmt)
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FnMut`, `Fn`
[INFO] [stderr]  --> src/poly.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::{Fn, FnMut, FnOnce};
[INFO] [stderr]   |                ^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hlist::*`
[INFO] [stderr]  --> src/tuple.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use hlist::*;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `headOption`
[INFO] [stderr]   --> src/poly.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 | struct headOption;
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `size`
[INFO] [stderr]   --> src/poly.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | struct size;
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `type_macros` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(type_macros)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hlist.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         try!(self.0.fmt(fmt)); self.1.fmt(fmt)
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FnMut`, `Fn`
[INFO] [stderr]  --> src/poly.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::{Fn, FnMut, FnOnce};
[INFO] [stderr]   |                ^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hlist::*`
[INFO] [stderr]  --> src/tuple.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use hlist::*;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/poly.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let x = singleton(10);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/poly.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let y = singleton("hello");
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `headOption`
[INFO] [stderr]   --> src/poly.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 | struct headOption;
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `size`
[INFO] [stderr]   --> src/poly.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | struct size;
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `type_macros` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(type_macros)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `point`
[INFO] [stderr]   --> tests/tests.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let point = Point { x: 0, y: 0 };
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `x`
[INFO] [stderr]  --> tests/tests.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     x: i32,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `y`
[INFO] [stderr]  --> tests/tests.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     y: i32
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_generic_point`
[INFO] [stderr]   --> tests/tests.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn test_generic_point() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `type_macros` has been stable since 1.13.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> tests/tests.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(type_macros)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/molten-4944303ebc0092be)
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-a3c0f9d85d5ed25d)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests molten
[INFO] [stdout] running 1 test
[INFO] [stdout] test poly::test_singleton ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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] [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" "73f338a0fb4ae04629223b632cb138a2aa2ff5cfc69cb597fc92aa09e6aa741a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73f338a0fb4ae04629223b632cb138a2aa2ff5cfc69cb597fc92aa09e6aa741a", kill_on_drop: false }`
[INFO] [stdout] 73f338a0fb4ae04629223b632cb138a2aa2ff5cfc69cb597fc92aa09e6aa741a