[INFO] cloning repository https://github.com/MattWindsor91/phenolphthalein
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MattWindsor91/phenolphthalein" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattWindsor91%2Fphenolphthalein", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattWindsor91%2Fphenolphthalein'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a64e8a2354aea5f7a256be6c875c214c4bcf8cc9
[INFO] checking MattWindsor91/phenolphthalein against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattWindsor91%2Fphenolphthalein" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MattWindsor91/phenolphthalein
[INFO] finished tweaking git repo https://github.com/MattWindsor91/phenolphthalein
[INFO] tweaked toml for git repo https://github.com/MattWindsor91/phenolphthalein written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MattWindsor91/phenolphthalein on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MattWindsor91/phenolphthalein 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cafd48150c715ecb191d13da624fc0285ece2d14a7ade014f0eb47f08f00ebba
[INFO] running `Command { std: "docker" "start" "-a" "cafd48150c715ecb191d13da624fc0285ece2d14a7ade014f0eb47f08f00ebba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cafd48150c715ecb191d13da624fc0285ece2d14a7ade014f0eb47f08f00ebba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cafd48150c715ecb191d13da624fc0285ece2d14a7ade014f0eb47f08f00ebba", kill_on_drop: false }`
[INFO] [stdout] cafd48150c715ecb191d13da624fc0285ece2d14a7ade014f0eb47f08f00ebba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44a9ed0ab655a70018c5d0505b057c642715a96ed7004e8d601b991b6f9a2ffb
[INFO] running `Command { std: "docker" "start" "-a" "44a9ed0ab655a70018c5d0505b057c642715a96ed7004e8d601b991b6f9a2ffb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]     Checking ppv-lite86 v0.2.14
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking tabwriter v1.2.1
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]    Compiling phenolphthalein v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.23.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling dlopen_derive v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking dlopen v0.1.8
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking ctrlc v3.2.1
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stdout] warning: struct `Static` is never constructed
[INFO] [stdout]   --> src/api/rust/entry.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Static {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, Infallible>, PathBuf>
[INFO] [stdout]   --> src/ux/clap.rs:44:56
[INFO] [stdout]    |
[INFO] [stdout] 44 |         .map_or_else(|| Ok(io::default_file()), |x| Ok(x.parse()?))
[INFO] [stdout]    |                                                        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/ux/clap.rs:44:56
[INFO] [stdout]    |
[INFO] [stdout] 44 |         .map_or_else(|| Ok(io::default_file()), |x| Ok(x.parse()?))
[INFO] [stdout]    |                                                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, Infallible>, PathBuf>
[INFO] [stdout]    --> src/ux/clap.rs:159:27
[INFO] [stdout]     |
[INFO] [stdout] 159 |             Self::RunTest(input.parse()?, clap_or_default(matches)?)
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/ux/clap.rs:159:27
[INFO] [stdout]     |
[INFO] [stdout] 159 |             Self::RunTest(input.parse()?, clap_or_default(matches)?)
[INFO] [stdout]     |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Static` is never constructed
[INFO] [stdout]   --> src/api/rust/entry.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Static {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Env` is never constructed
[INFO] [stdout]   --> src/api/rust/env.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Env {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Slotset` is never constructed
[INFO] [stdout]   --> src/api/rust/env.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Slotset<A, T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/api/rust/env.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl<A: Default, T: Default> Slotset<A, T> {
[INFO] [stdout]    | ------------------------------------------ associated function in this implementation
[INFO] [stdout] 54 |     /// Constructs a new slotset from a slot reservation.
[INFO] [stdout] 55 |     pub fn new(res: &slot::Reservation<T>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `SlotAtomic` is never used
[INFO] [stdout]   --> src/api/rust/env.rs:67:11
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub trait SlotAtomic<T> {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get`, `get_atomic`, `get_non_atomic`, and `set` are never used
[INFO] [stdout]    --> src/api/rust/env.rs:85:12
[INFO] [stdout]     |
[INFO] [stdout]  84 | impl<A: SlotAtomic<T>, T: Copy + Default> Slotset<A, T> {
[INFO] [stdout]     | ------------------------------------------------------- methods in this implementation
[INFO] [stdout]  85 |     pub fn get(&self, slot: slot::Slot) -> T {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  93 |     fn get_atomic(&self, index: usize) -> T {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |     fn get_non_atomic(&self, index: usize) -> T {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 108 |     pub fn set(&mut self, slot: slot::Slot, v: T) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `default_vec` is never used
[INFO] [stdout]    --> src/api/rust/env.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn default_vec<T: Default>(len: usize) -> Vec<T> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, Infallible>, PathBuf>
[INFO] [stdout]   --> src/ux/clap.rs:44:56
[INFO] [stdout]    |
[INFO] [stdout] 44 |         .map_or_else(|| Ok(io::default_file()), |x| Ok(x.parse()?))
[INFO] [stdout]    |                                                        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/ux/clap.rs:44:56
[INFO] [stdout]    |
[INFO] [stdout] 44 |         .map_or_else(|| Ok(io::default_file()), |x| Ok(x.parse()?))
[INFO] [stdout]    |                                                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `phenolphthalein` (lib test) due to 4 previous errors; 1 warning emitted
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<std::result::Result<Infallible, Infallible>, PathBuf>
[INFO] [stdout]    --> src/ux/clap.rs:159:27
[INFO] [stdout]     |
[INFO] [stdout] 159 |             Self::RunTest(input.parse()?, clap_or_default(matches)?)
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/ux/clap.rs:159:27
[INFO] [stdout]     |
[INFO] [stdout] 159 |             Self::RunTest(input.parse()?, clap_or_default(matches)?)
[INFO] [stdout]     |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `phenolphthalein` (lib) due to 4 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "44a9ed0ab655a70018c5d0505b057c642715a96ed7004e8d601b991b6f9a2ffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44a9ed0ab655a70018c5d0505b057c642715a96ed7004e8d601b991b6f9a2ffb", kill_on_drop: false }`
[INFO] [stdout] 44a9ed0ab655a70018c5d0505b057c642715a96ed7004e8d601b991b6f9a2ffb
