[INFO] fetching crate VTMK 0.1.0...
[INFO] checking VTMK-0.1.0 against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299
[INFO] extracting crate VTMK 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate VTMK 0.1.0
[INFO] finished tweaking crates.io crate VTMK 0.1.0
[INFO] tweaked toml for crates.io crate VTMK 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate VTMK 0.1.0 on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate VTMK 0.1.0 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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: version requirement `0.9.0+zstd.1.5.0` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr] warning: version requirement `4.1.1+zstd.1.5.0` for dependency `zstd-safe` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[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 zstd-safe v4.1.1+zstd.1.5.0
[INFO] [stderr]   Downloaded zstd v0.9.0+zstd.1.5.0
[INFO] [stderr]   Downloaded zstd-sys v1.6.1+zstd.1.5.0
[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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17ece8132e4abe84b8842f0beab8369f87eeac01c9e5bf34d37554ee2d012ffc
[INFO] running `Command { std: "docker" "start" "-a" "17ece8132e4abe84b8842f0beab8369f87eeac01c9e5bf34d37554ee2d012ffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17ece8132e4abe84b8842f0beab8369f87eeac01c9e5bf34d37554ee2d012ffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17ece8132e4abe84b8842f0beab8369f87eeac01c9e5bf34d37554ee2d012ffc", kill_on_drop: false }`
[INFO] [stdout] 17ece8132e4abe84b8842f0beab8369f87eeac01c9e5bf34d37554ee2d012ffc
[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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c759c406f1c0a37117937222fbe20cb977a6137ff214f321adfecf06afcd3592
[INFO] running `Command { std: "docker" "start" "-a" "c759c406f1c0a37117937222fbe20cb977a6137ff214f321adfecf06afcd3592", kill_on_drop: false }`
[INFO] [stderr] warning: version requirement `0.9.0+zstd.1.5.0` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr] warning: version requirement `4.1.1+zstd.1.5.0` for dependency `zstd-safe` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling zstd-safe v4.1.1+zstd.1.5.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking os_str_bytes v4.2.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling zstd-sys v1.6.1+zstd.1.5.0
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.5
[INFO] [stderr]     Checking clap v3.0.0-beta.5
[INFO] [stderr]     Checking zstd v0.9.0+zstd.1.5.0
[INFO] [stderr]     Checking VTMK v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `compress`
[INFO] [stdout]  --> src/zipping.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use zstd_safe::{compress, max_c_level, CompressionLevel, SafeResult};
[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: `zipping::*`
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use zipping::*;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]   --> src/zipping.rs:34:28
[INFO] [stdout]    |
[INFO] [stdout] 34 |         fn compress(&self, config: ZstdConfig) -> SafeResult {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EXTENSION` is never used
[INFO] [stdout]  --> src/zipping.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub const EXTENSION: &'static str = ".vlog";
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ZstdConfig` is never constructed
[INFO] [stdout]  --> src/zipping.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub struct ZstdConfig {
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_comperssionlevel` is never used
[INFO] [stdout]   --> src/zipping.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |     impl ZstdConfig {
[INFO] [stdout]    |     --------------- method in this implementation
[INFO] [stdout] 17 |         /// Function to determine if the compression is less than or equal to the maximum level
[INFO] [stdout] 18 |         pub fn as_comperssionlevel(&self) -> Option<CompressionLevel> {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Compress` is never used
[INFO] [stdout]   --> src/zipping.rs:27:15
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub trait Compress {
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `new` and `compress` are never used
[INFO] [stdout]   --> src/zipping.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     impl dyn Compress {
[INFO] [stdout]    |     ----------------- methods in this implementation
[INFO] [stdout] 33 |         fn new(&self) {}
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 34 |         fn compress(&self, config: ZstdConfig) -> SafeResult {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FileInfo` is never constructed
[INFO] [stdout]  --> src/reading.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct FileInfo {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `find_file_dir` and `take_file_from_vec` are never used
[INFO] [stdout]   --> src/reading.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl FileInfo {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] 10 |     ///Returns the files in the specified directory
[INFO] [stdout] 11 |     pub fn find_file_dir(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn take_file_from_vec(&self) {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uuid_generator` is never used
[INFO] [stdout]  --> src/uuid.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) fn uuid_generator() -> String {
[INFO] [stdout]   |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `DirEntry::path` that must be used
[INFO] [stdout]   --> src/reading.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 |                         dir_file.path();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |                         let _ = dir_file.path();
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `compress`
[INFO] [stdout]  --> src/zipping.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use zstd_safe::{compress, max_c_level, CompressionLevel, SafeResult};
[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: `zipping::*`
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use zipping::*;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]   --> src/zipping.rs:34:28
[INFO] [stdout]    |
[INFO] [stdout] 34 |         fn compress(&self, config: ZstdConfig) -> SafeResult {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EXTENSION` is never used
[INFO] [stdout]  --> src/zipping.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub const EXTENSION: &'static str = ".vlog";
[INFO] [stdout]   |               ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ZstdConfig` is never constructed
[INFO] [stdout]  --> src/zipping.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub struct ZstdConfig {
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_comperssionlevel` is never used
[INFO] [stdout]   --> src/zipping.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |     impl ZstdConfig {
[INFO] [stdout]    |     --------------- method in this implementation
[INFO] [stdout] 17 |         /// Function to determine if the compression is less than or equal to the maximum level
[INFO] [stdout] 18 |         pub fn as_comperssionlevel(&self) -> Option<CompressionLevel> {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Compress` is never used
[INFO] [stdout]   --> src/zipping.rs:27:15
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub trait Compress {
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `new` and `compress` are never used
[INFO] [stdout]   --> src/zipping.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     impl dyn Compress {
[INFO] [stdout]    |     ----------------- methods in this implementation
[INFO] [stdout] 33 |         fn new(&self) {}
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 34 |         fn compress(&self, config: ZstdConfig) -> SafeResult {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FileInfo` is never constructed
[INFO] [stdout]  --> src/reading.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct FileInfo {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `find_file_dir` and `take_file_from_vec` are never used
[INFO] [stdout]   --> src/reading.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl FileInfo {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] 10 |     ///Returns the files in the specified directory
[INFO] [stdout] 11 |     pub fn find_file_dir(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn take_file_from_vec(&self) {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uuid_generator` is never used
[INFO] [stdout]  --> src/uuid.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) fn uuid_generator() -> String {
[INFO] [stdout]   |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `DirEntry::path` that must be used
[INFO] [stdout]   --> src/reading.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 |                         dir_file.path();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |                         let _ = dir_file.path();
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 42s
[INFO] running `Command { std: "docker" "inspect" "c759c406f1c0a37117937222fbe20cb977a6137ff214f321adfecf06afcd3592", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c759c406f1c0a37117937222fbe20cb977a6137ff214f321adfecf06afcd3592", kill_on_drop: false }`
[INFO] [stdout] c759c406f1c0a37117937222fbe20cb977a6137ff214f321adfecf06afcd3592
