[INFO] cloning repository https://github.com/meremika/comprehensive-rust-exercies-and-solutions
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/meremika/comprehensive-rust-exercies-and-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeremika%2Fcomprehensive-rust-exercies-and-solutions", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeremika%2Fcomprehensive-rust-exercies-and-solutions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13f9a7f9ffa5cc198c1fbc391c8f1aceaf42be6e
[INFO] checking meremika/comprehensive-rust-exercies-and-solutions against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeremika%2Fcomprehensive-rust-exercies-and-solutions" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/meremika/comprehensive-rust-exercies-and-solutions
[INFO] finished tweaking git repo https://github.com/meremika/comprehensive-rust-exercies-and-solutions
[INFO] tweaked toml for git repo https://github.com/meremika/comprehensive-rust-exercies-and-solutions written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/meremika/comprehensive-rust-exercies-and-solutions 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/meremika/comprehensive-rust-exercies-and-solutions 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 27a7ab2673e0c6a2d488302cbede132129a217665c409e4ac3490374b899eb75
[INFO] running `Command { std: "docker" "start" "-a" "27a7ab2673e0c6a2d488302cbede132129a217665c409e4ac3490374b899eb75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27a7ab2673e0c6a2d488302cbede132129a217665c409e4ac3490374b899eb75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27a7ab2673e0c6a2d488302cbede132129a217665c409e4ac3490374b899eb75", kill_on_drop: false }`
[INFO] [stdout] 27a7ab2673e0c6a2d488302cbede132129a217665c409e4ac3490374b899eb75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9a355755041b4f16207c15a8b8111eb21aea54f8a5e12ddc5300ccc9ceb619a2
[INFO] running `Command { std: "docker" "start" "-a" "9a355755041b4f16207c15a8b8111eb21aea54f8a5e12ddc5300ccc9ceb619a2", kill_on_drop: false }`
[INFO] [stderr]     Checking comprehensive-rust-exercies-and-solutions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Philosopher` is never constructed
[INFO] [stdout]   --> src/philosophers.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Philosopher {
[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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/health_statistics.rs:33:25
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn visit_doctor(&mut self, measurements: Measurements) -> HealthReport {
[INFO] [stdout]    |                         ^^^^^^^^^ the lifetime is elided here     ^^^^^^^^^^^^ the same lifetime is hidden 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] 33 |     pub fn visit_doctor(&mut self, measurements: Measurements) -> HealthReport<'_> {
[INFO] [stdout]    |                                                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/protobuf.rs:100:22
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn parse_field(data: &[u8]) -> (Field, &[u8]) {
[INFO] [stdout]     |                      ^^^^^      ^^^^^  ^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                      |          |
[INFO] [stdout]     |                      |          the same lifetime is hidden here
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn parse_field(data: &[u8]) -> (Field<'_>, &[u8]) {
[INFO] [stdout]     |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `comprehensive-rust-exercies-and-solutions` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/health_statistics.rs:33:25
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn visit_doctor(&mut self, measurements: Measurements) -> HealthReport {
[INFO] [stdout]    |                         ^^^^^^^^^ the lifetime is elided here     ^^^^^^^^^^^^ the same lifetime is hidden 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] 33 |     pub fn visit_doctor(&mut self, measurements: Measurements) -> HealthReport<'_> {
[INFO] [stdout]    |                                                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/protobuf.rs:100:22
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn parse_field(data: &[u8]) -> (Field, &[u8]) {
[INFO] [stdout]     |                      ^^^^^      ^^^^^  ^^^^^ the same lifetime is elided here
[INFO] [stdout]     |                      |          |
[INFO] [stdout]     |                      |          the same lifetime is hidden here
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn parse_field(data: &[u8]) -> (Field<'_>, &[u8]) {
[INFO] [stdout]     |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9a355755041b4f16207c15a8b8111eb21aea54f8a5e12ddc5300ccc9ceb619a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a355755041b4f16207c15a8b8111eb21aea54f8a5e12ddc5300ccc9ceb619a2", kill_on_drop: false }`
[INFO] [stdout] 9a355755041b4f16207c15a8b8111eb21aea54f8a5e12ddc5300ccc9ceb619a2
