[INFO] cloning repository https://github.com/genbyte/rnprefix
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/genbyte/rnprefix" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgenbyte%2Frnprefix", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgenbyte%2Frnprefix'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a93c4749f145e65f6910a3bcbaeb7b7373e22811
[INFO] checking genbyte/rnprefix against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgenbyte%2Frnprefix" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/genbyte/rnprefix
[INFO] finished tweaking git repo https://github.com/genbyte/rnprefix
[INFO] tweaked toml for git repo https://github.com/genbyte/rnprefix written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/genbyte/rnprefix on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/genbyte/rnprefix 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3b330b9c0eb44940a67a73d8adcce155776ff1bd927d1e72d71fb937516f11c
[INFO] running `Command { std: "docker" "start" "-a" "a3b330b9c0eb44940a67a73d8adcce155776ff1bd927d1e72d71fb937516f11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3b330b9c0eb44940a67a73d8adcce155776ff1bd927d1e72d71fb937516f11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3b330b9c0eb44940a67a73d8adcce155776ff1bd927d1e72d71fb937516f11c", kill_on_drop: false }`
[INFO] [stdout] a3b330b9c0eb44940a67a73d8adcce155776ff1bd927d1e72d71fb937516f11c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cbeeb279c1e24aed12d59fbc8fb1d6dc4fc15089d1bb86aead169033c633b9b
[INFO] running `Command { std: "docker" "start" "-a" "1cbeeb279c1e24aed12d59fbc8fb1d6dc4fc15089d1bb86aead169033c633b9b", kill_on_drop: false }`
[INFO] [stderr]     Checking rnprefix v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Suffixes` is never constructed
[INFO] [stdout]    --> src/lib.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub struct Suffixes<'r> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rn`, `name`, and `offset` are never read
[INFO] [stdout]    --> src/lib.rs:105:2
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub struct Suffixes<'r> {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 105 |     rn: &'r Rnprefix,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 106 |     name: &'r str,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 107 |     offset: usize,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:32:18
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn prefixes(&self) -> Prefixes {
[INFO] [stdout]    |                     ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn prefixes(&self) -> Prefixes<'_> {
[INFO] [stdout]    |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rnprefix` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Suffixes` is never constructed
[INFO] [stdout]    --> src/lib.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub struct Suffixes<'r> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rn`, `name`, and `offset` are never read
[INFO] [stdout]    --> src/lib.rs:105:2
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub struct Suffixes<'r> {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 105 |     rn: &'r Rnprefix,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 106 |     name: &'r str,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 107 |     offset: usize,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:32:18
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn prefixes(&self) -> Prefixes {
[INFO] [stdout]    |                     ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn prefixes(&self) -> Prefixes<'_> {
[INFO] [stdout]    |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rnprefix` (lib) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1cbeeb279c1e24aed12d59fbc8fb1d6dc4fc15089d1bb86aead169033c633b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cbeeb279c1e24aed12d59fbc8fb1d6dc4fc15089d1bb86aead169033c633b9b", kill_on_drop: false }`
[INFO] [stdout] 1cbeeb279c1e24aed12d59fbc8fb1d6dc4fc15089d1bb86aead169033c633b9b
