[INFO] fetching crate tls-certificate-exporter 0.0.1...
[INFO] checking tls-certificate-exporter-0.0.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate tls-certificate-exporter 0.0.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tls-certificate-exporter 0.0.1
[INFO] finished tweaking crates.io crate tls-certificate-exporter 0.0.1
[INFO] tweaked toml for crates.io crate tls-certificate-exporter 0.0.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tls-certificate-exporter 0.0.1 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 crates.io crate tls-certificate-exporter 0.0.1 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 }`
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[INFO] [stdout] 1289e1cc671bc97531722f665b487200833783395f2229c33a33725381884fba
[INFO] running `Command { std: "docker" "start" "-a" "1289e1cc671bc97531722f665b487200833783395f2229c33a33725381884fba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1289e1cc671bc97531722f665b487200833783395f2229c33a33725381884fba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1289e1cc671bc97531722f665b487200833783395f2229c33a33725381884fba", kill_on_drop: false }`
[INFO] [stdout] 1289e1cc671bc97531722f665b487200833783395f2229c33a33725381884fba
[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] 82c7fc8418e6b92344abf94332b2b88b85180cdeec021eb879218dc9aa7abe93
[INFO] running `Command { std: "docker" "start" "-a" "82c7fc8418e6b92344abf94332b2b88b85180cdeec021eb879218dc9aa7abe93", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/configs/mod.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{Context, Result as AnyResult};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TrustAnchor`
[INFO] [stdout]  --> src/configs/parameters.rs:6:40
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustls_pki_types::{CertificateDer, TrustAnchor};
[INFO] [stdout]   |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/store/mod.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{Context, Result as AnyResult};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/configs/mod.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{Context, Result as AnyResult};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TrustAnchor`
[INFO] [stdout]  --> src/configs/parameters.rs:6:40
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustls_pki_types::{CertificateDer, TrustAnchor};
[INFO] [stdout]   |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/store/mod.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{Context, Result as AnyResult};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/store/mod.rs:83:36
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn update_endpoints(&mut self, target: &Target, ep_states: Vec<EndpointState>) {
[INFO] [stdout]    |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `with_webpki_roots` is never used
[INFO] [stdout]   --> src/certificate_interceptor.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl CertificateInterceptor {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn with_webpki_roots() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `server_name` is never read
[INFO] [stdout]   --> src/configs/parameters.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct ConnectionParameters {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub server_name: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ConnectionParameters` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `load_certificate` is never used
[INFO] [stdout]   --> src/configs/parameters.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl ConnectionParameters {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn load_certificate(&mut self, der: &[u8]) -> AnyResult<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `AppResult` is never used
[INFO] [stdout]  --> src/error.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub type AppResult<T> = Result<T, AppError>;
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidPemTag` is never constructed
[INFO] [stdout]   --> src/error.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub enum ErrorReason {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 65 |     InvalidPemTag,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorReason` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_pem_certificates` and `clear` are never used
[INFO] [stdout]   --> src/store/mod.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Store {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 26 |     pub fn add_pem_certificates(&mut self, buf: &[u8]) -> AnyResult<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `probe_result` and `last_update` are never read
[INFO] [stdout]   --> src/store/endpoint_state.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct EndpointState {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub probe_result: Result<(), String>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 11 |     pub last_update: Option<DateTime<Utc>>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EndpointState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `with_target` are never used
[INFO] [stdout]   --> src/store/endpoint_state.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl EndpointState {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout] 15 |     pub fn new(endpoint: Endpoint) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn with_target(endpoint: Endpoint, target: Target) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `endpoints` is never read
[INFO] [stdout]   --> src/store/target.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct TargetState {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 42 |     pub endpoints: Vec<EndpointState>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TargetState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<FileContent, Infallible>
[INFO] [stdout]   --> src/configs/file_content.rs:35:53
[INFO] [stdout]    |
[INFO] [stdout] 35 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 36 | |         Ok(Self::Path {
[INFO] [stdout] 37 | |             path: PathBuf::from(s),
[INFO] [stdout] 38 | |         })
[INFO] [stdout] 39 | |     }
[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: Result<FileContent, Infallible>
[INFO] [stdout]   --> src/configs/file_content.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | /         Ok(Self::Path {
[INFO] [stdout] 37 | |             path: PathBuf::from(s),
[INFO] [stdout] 38 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tls-certificate-exporter` (bin "tls-certificate-exporter" test) due to 2 previous errors; 13 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/store/mod.rs:83:36
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn update_endpoints(&mut self, target: &Target, ep_states: Vec<EndpointState>) {
[INFO] [stdout]    |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `with_webpki_roots` is never used
[INFO] [stdout]   --> src/certificate_interceptor.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl CertificateInterceptor {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn with_webpki_roots() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `server_name` is never read
[INFO] [stdout]   --> src/configs/parameters.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct ConnectionParameters {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub server_name: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ConnectionParameters` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `load_certificate` and `load_webpki_roots` are never used
[INFO] [stdout]   --> src/configs/parameters.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl ConnectionParameters {
[INFO] [stdout]    | ------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn load_certificate(&mut self, der: &[u8]) -> AnyResult<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn load_webpki_roots(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `AppResult` is never used
[INFO] [stdout]  --> src/error.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub type AppResult<T> = Result<T, AppError>;
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidPemTag` is never constructed
[INFO] [stdout]   --> src/error.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub enum ErrorReason {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 65 |     InvalidPemTag,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorReason` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_pem_certificates` and `clear` are never used
[INFO] [stdout]   --> src/store/mod.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Store {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 26 |     pub fn add_pem_certificates(&mut self, buf: &[u8]) -> AnyResult<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `probe_result` and `last_update` are never read
[INFO] [stdout]   --> src/store/endpoint_state.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct EndpointState {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub probe_result: Result<(), String>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 11 |     pub last_update: Option<DateTime<Utc>>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EndpointState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `with_target` are never used
[INFO] [stdout]   --> src/store/endpoint_state.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl EndpointState {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout] 15 |     pub fn new(endpoint: Endpoint) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn with_target(endpoint: Endpoint, target: Target) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `endpoints` is never read
[INFO] [stdout]   --> src/store/target.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct TargetState {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 42 |     pub endpoints: Vec<EndpointState>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TargetState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<FileContent, Infallible>
[INFO] [stdout]   --> src/configs/file_content.rs:35:53
[INFO] [stdout]    |
[INFO] [stdout] 35 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 36 | |         Ok(Self::Path {
[INFO] [stdout] 37 | |             path: PathBuf::from(s),
[INFO] [stdout] 38 | |         })
[INFO] [stdout] 39 | |     }
[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: Result<FileContent, Infallible>
[INFO] [stdout]   --> src/configs/file_content.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | /         Ok(Self::Path {
[INFO] [stdout] 37 | |             path: PathBuf::from(s),
[INFO] [stdout] 38 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tls-certificate-exporter` (bin "tls-certificate-exporter") due to 2 previous errors; 13 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "82c7fc8418e6b92344abf94332b2b88b85180cdeec021eb879218dc9aa7abe93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82c7fc8418e6b92344abf94332b2b88b85180cdeec021eb879218dc9aa7abe93", kill_on_drop: false }`
[INFO] [stdout] 82c7fc8418e6b92344abf94332b2b88b85180cdeec021eb879218dc9aa7abe93
