[INFO] cloning repository https://github.com/mdmahikaishar/zipper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdmahikaishar/zipper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdmahikaishar%2Fzipper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdmahikaishar%2Fzipper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30d0f24c738f22ac9a67d59a4e6b2dc29c25136d
[INFO] checking mdmahikaishar/zipper against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdmahikaishar%2Fzipper" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdmahikaishar/zipper on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mdmahikaishar/zipper
[INFO] finished tweaking git repo https://github.com/mdmahikaishar/zipper
[INFO] tweaked toml for git repo https://github.com/mdmahikaishar/zipper written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mdmahikaishar/zipper 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]      Locking 1 package
[INFO] [stderr]     Updating zipper v0.0.0 (/workspace/builds/worker-6-tc1/source) -> v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90078f83710425f1d70d77a555691e4c743583e55e58fba5808c0257df9a7d2a
[INFO] running `Command { std: "docker" "start" "-a" "90078f83710425f1d70d77a555691e4c743583e55e58fba5808c0257df9a7d2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90078f83710425f1d70d77a555691e4c743583e55e58fba5808c0257df9a7d2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90078f83710425f1d70d77a555691e4c743583e55e58fba5808c0257df9a7d2a", kill_on_drop: false }`
[INFO] [stdout] 90078f83710425f1d70d77a555691e4c743583e55e58fba5808c0257df9a7d2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de28bea9e938dd00e23308c523904e7acc5cfb149df84e384fe775b76d89dde5
[INFO] running `Command { std: "docker" "start" "-a" "de28bea9e938dd00e23308c523904e7acc5cfb149df84e384fe775b76d89dde5", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]     Checking deranged v0.3.8
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking password-hash v0.4.2
[INFO] [stderr]     Checking flate2 v1.0.27
[INFO] [stderr]    Compiling jobserver v0.1.26
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking time v0.3.28
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]    Compiling zstd-sys v2.0.8+zstd.1.5.5
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking aes v0.8.3
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]     Checking pbkdf2 v0.11.0
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]     Checking zip v0.6.6
[INFO] [stderr]     Checking zipper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `zip` is imported redundantly
[INFO] [stdout]  --> src/libs.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use zip::{self, ZipArchive, ZipWriter};
[INFO] [stdout]   |           ^^^^ the item `zip` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `zip` is imported redundantly
[INFO] [stdout]  --> src/libs.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use zip::{self, ZipArchive, ZipWriter};
[INFO] [stdout]   |           ^^^^ the item `zip` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/libs.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |         zip_recursive(src_path, src_path.clone(), &mut zip_writer)?;
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/libs.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |         zip_recursive(src_path, src_path.clone(), &mut zip_writer)?;
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.87s
[INFO] running `Command { std: "docker" "inspect" "de28bea9e938dd00e23308c523904e7acc5cfb149df84e384fe775b76d89dde5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de28bea9e938dd00e23308c523904e7acc5cfb149df84e384fe775b76d89dde5", kill_on_drop: false }`
[INFO] [stdout] de28bea9e938dd00e23308c523904e7acc5cfb149df84e384fe775b76d89dde5