[INFO] cloning repository https://github.com/WanzenBug/dry
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WanzenBug/dry" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanzenBug%2Fdry", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanzenBug%2Fdry'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7da381dfee0853c705861ba60a1ea2804957381
[INFO] checking WanzenBug/dry against try#2b39fe756f52bc2825bf5b2bfc385cab922dae10 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanzenBug%2Fdry" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/WanzenBug/dry
[INFO] finished tweaking git repo https://github.com/WanzenBug/dry
[INFO] tweaked toml for git repo https://github.com/WanzenBug/dry written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/WanzenBug/dry on toolchain 2b39fe756f52bc2825bf5b2bfc385cab922dae10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/WanzenBug/dry 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" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded once_cell v1.3.1
[INFO] [stderr]   Downloaded serde_json v1.0.50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15a590780a7604a0f00a9118388709577e9af2e7807e97b91f70c5ac096e4cc9
[INFO] running `Command { std: "docker" "start" "-a" "15a590780a7604a0f00a9118388709577e9af2e7807e97b91f70c5ac096e4cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15a590780a7604a0f00a9118388709577e9af2e7807e97b91f70c5ac096e4cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15a590780a7604a0f00a9118388709577e9af2e7807e97b91f70c5ac096e4cc9", kill_on_drop: false }`
[INFO] [stdout] 15a590780a7604a0f00a9118388709577e9af2e7807e97b91f70c5ac096e4cc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2b39fe756f52bc2825bf5b2bfc385cab922dae10" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86d00201ea5415540b8e714e35315c7a67270b6d4b4db8d451e084e8da16a82d
[INFO] running `Command { std: "docker" "start" "-a" "86d00201ea5415540b8e714e35315c7a67270b6d4b4db8d451e084e8da16a82d", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking cc v1.0.50
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking rtrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stdout] warning: method `pre_exec` is never used
[INFO] [stdout]   --> src/command_ext.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub trait PreExecStopCommand: CommandExt {
[INFO] [stdout]    |           ------------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 26 |     unsafe fn pre_exec<F>(&mut self, f: F) -> &mut Self
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `process_group_map` is never read
[INFO] [stdout]   --> src/enhanced_tracer/mod.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct EnhancedTracer {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 18 |     process_group_map: HashMap<i32, ProcessInformation>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnhancedTracer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_descriptors` is never read
[INFO] [stdout]   --> src/enhanced_tracer/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct ProcessInformation {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] 30 |     file_descriptors: HashMap<i32, Arc<PathBuf>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessInformation` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `address` are never read
[INFO] [stdout]   --> src/enhanced_tracer/syscall_defs/syscall_defs_enter.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub struct ArchPrctl {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 77 |     code: ArchPrctlMode,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 78 |     address: *mut c_void,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArchPrctl` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_descriptor` is never read
[INFO] [stdout]    --> src/enhanced_tracer/syscall_defs/syscall_defs_enter.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub struct Dup {
[INFO] [stdout]     |            --- field in this struct
[INFO] [stdout] 189 |     file_descriptor: i32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Dup` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stat` is never read
[INFO] [stdout]    --> src/enhanced_tracer/syscall_defs/syscall_defs_exit.rs:619:5
[INFO] [stdout]     |
[INFO] [stdout] 618 | pub struct LstatReturn {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] 619 |     stat: StatStruct,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LstatReturn` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `address` is never read
[INFO] [stdout]    --> src/enhanced_tracer/syscall_defs/syscall_defs_exit.rs:675:5
[INFO] [stdout]     |
[INFO] [stdout] 674 | pub struct MmapReturn {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 675 |     address: *mut c_void,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MmapReturn` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_descriptor` is never read
[INFO] [stdout]    --> src/enhanced_tracer/syscall_defs/syscall_defs_exit.rs:824:5
[INFO] [stdout]     |
[INFO] [stdout] 823 | pub struct OpenatReturn {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] 824 |     file_descriptor: i32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `OpenatReturn` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:242:19
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn next_event(&mut self) -> Result<StoppedProcess, OsError> {
[INFO] [stdout]     |                   ^^^^^^^^^            -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn next_event(&mut self) -> Result<StoppedProcess<'_>, OsError> {
[INFO] [stdout]     |                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pre_exec` is never used
[INFO] [stdout]   --> src/command_ext.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub trait PreExecStopCommand: CommandExt {
[INFO] [stdout]    |           ------------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 26 |     unsafe fn pre_exec<F>(&mut self, f: F) -> &mut Self
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `process_group_map` is never read
[INFO] [stdout]   --> src/enhanced_tracer/mod.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct EnhancedTracer {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 18 |     process_group_map: HashMap<i32, ProcessInformation>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnhancedTracer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_descriptors` is never read
[INFO] [stdout]   --> src/enhanced_tracer/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct ProcessInformation {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] 30 |     file_descriptors: HashMap<i32, Arc<PathBuf>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessInformation` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `address` are never read
[INFO] [stdout]   --> src/enhanced_tracer/syscall_defs/syscall_defs_enter.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub struct ArchPrctl {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 77 |     code: ArchPrctlMode,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 78 |     address: *mut c_void,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ArchPrctl` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_descriptor` is never read
[INFO] [stdout]    --> src/enhanced_tracer/syscall_defs/syscall_defs_enter.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 188 | pub struct Dup {
[INFO] [stdout]     |            --- field in this struct
[INFO] [stdout] 189 |     file_descriptor: i32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Dup` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stat` is never read
[INFO] [stdout]    --> src/enhanced_tracer/syscall_defs/syscall_defs_exit.rs:619:5
[INFO] [stdout]     |
[INFO] [stdout] 618 | pub struct LstatReturn {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] 619 |     stat: StatStruct,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LstatReturn` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `address` is never read
[INFO] [stdout]    --> src/enhanced_tracer/syscall_defs/syscall_defs_exit.rs:675:5
[INFO] [stdout]     |
[INFO] [stdout] 674 | pub struct MmapReturn {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 675 |     address: *mut c_void,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MmapReturn` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_descriptor` is never read
[INFO] [stdout]    --> src/enhanced_tracer/syscall_defs/syscall_defs_exit.rs:824:5
[INFO] [stdout]     |
[INFO] [stdout] 823 | pub struct OpenatReturn {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] 824 |     file_descriptor: i32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `OpenatReturn` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:242:19
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn next_event(&mut self) -> Result<StoppedProcess, OsError> {
[INFO] [stdout]     |                   ^^^^^^^^^            -------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn next_event(&mut self) -> Result<StoppedProcess<'_>, OsError> {
[INFO] [stdout]     |                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `Command { std: "docker" "inspect" "86d00201ea5415540b8e714e35315c7a67270b6d4b4db8d451e084e8da16a82d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86d00201ea5415540b8e714e35315c7a67270b6d4b4db8d451e084e8da16a82d", kill_on_drop: false }`
[INFO] [stdout] 86d00201ea5415540b8e714e35315c7a67270b6d4b4db8d451e084e8da16a82d
