[INFO] fetching crate dsc 0.1.3...
[INFO] checking dsc-0.1.3 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate dsc 0.1.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate dsc 0.1.3
[INFO] finished tweaking crates.io crate dsc 0.1.3
[INFO] tweaked toml for crates.io crate dsc 0.1.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dsc 0.1.3 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate dsc 0.1.3 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a2fe6e5636a367119a386ad376dc9dee4b6690f70414667335b27720f969038
[INFO] running `Command { std: "docker" "start" "-a" "1a2fe6e5636a367119a386ad376dc9dee4b6690f70414667335b27720f969038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a2fe6e5636a367119a386ad376dc9dee4b6690f70414667335b27720f969038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a2fe6e5636a367119a386ad376dc9dee4b6690f70414667335b27720f969038", kill_on_drop: false }`
[INFO] [stdout] 1a2fe6e5636a367119a386ad376dc9dee4b6690f70414667335b27720f969038
[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" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d865c81476371d52b720486615e5ddb15a36084fefb7bb151634120549e0073
[INFO] running `Command { std: "docker" "start" "-a" "8d865c81476371d52b720486615e5ddb15a36084fefb7bb151634120549e0073", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling const_fn v0.4.4
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking throttle v0.1.0
[INFO] [stderr]     Checking xxhash-rust v0.8.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.15
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking console v0.14.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking format_num v0.1.0
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stderr]     Checking dsc v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `OngoingDuplicate` is never constructed
[INFO] [stdout]   --> src/duplicate_detection/messages.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct OngoingDuplicate {
[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 `total_duplicates_found` is never read
[INFO] [stdout]   --> src/duplicate_detection/messages.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct AnalysisStatistics {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] 41 |     pub total_completed_investigations: u64,
[INFO] [stdout] 42 |     pub total_duplicates_found: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AnalysisStatistics` 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 `initial_block_size` is never read
[INFO] [stdout]   --> src/options.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Options {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub initial_block_size: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Options` 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/concurrency/select.rs:45:19
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn select(&mut self) -> (T, SelectedOperation) {
[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] 45 |     pub fn select(&mut self) -> (T, SelectedOperation<'_>) {
[INFO] [stdout]    |                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/concurrency/semaphore.rs:99:19
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn access(&self, lease_count: usize) -> SemaphoreGuard {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn access(&self, lease_count: usize) -> SemaphoreGuard<'_> {
[INFO] [stdout]    |                                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OngoingDuplicate` is never constructed
[INFO] [stdout]   --> src/duplicate_detection/messages.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct OngoingDuplicate {
[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 `total_duplicates_found` is never read
[INFO] [stdout]   --> src/duplicate_detection/messages.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct AnalysisStatistics {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] 41 |     pub total_completed_investigations: u64,
[INFO] [stdout] 42 |     pub total_duplicates_found: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AnalysisStatistics` 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 `initial_block_size` is never read
[INFO] [stdout]   --> src/options.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Options {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub initial_block_size: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Options` 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/concurrency/select.rs:45:19
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn select(&mut self) -> (T, SelectedOperation) {
[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] 45 |     pub fn select(&mut self) -> (T, SelectedOperation<'_>) {
[INFO] [stdout]    |                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/concurrency/semaphore.rs:99:19
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn access(&self, lease_count: usize) -> SemaphoreGuard {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn access(&self, lease_count: usize) -> SemaphoreGuard<'_> {
[INFO] [stdout]    |                                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.59s
[INFO] running `Command { std: "docker" "inspect" "8d865c81476371d52b720486615e5ddb15a36084fefb7bb151634120549e0073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d865c81476371d52b720486615e5ddb15a36084fefb7bb151634120549e0073", kill_on_drop: false }`
[INFO] [stdout] 8d865c81476371d52b720486615e5ddb15a36084fefb7bb151634120549e0073
