[INFO] updating cached repository https://github.com/kislenko-artem/rust_highloadcup
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 01cdf3053334510691ad7b52cbbd3d91646d7cdc
[INFO] checking kislenko-artem/rust_highloadcup against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkislenko-artem%2Frust_highloadcup" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kislenko-artem/rust_highloadcup on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kislenko-artem/rust_highloadcup
[INFO] finished tweaking git repo https://github.com/kislenko-artem/rust_highloadcup
[INFO] tweaked toml for git repo https://github.com/kislenko-artem/rust_highloadcup written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/kislenko-artem/rust_highloadcup already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dbf906bceb1f4130545f997200c8588e23444efd72664d49147ce7fc122356c2
[INFO] running `"docker" "start" "-a" "dbf906bceb1f4130545f997200c8588e23444efd72664d49147ce7fc122356c2"`
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]     Checking bzip2-sys v0.1.7
[INFO] [stderr]     Checking libflate v0.1.23
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking tokio v0.1.21
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking zip v0.5.2
[INFO] [stderr]     Checking hyper v0.12.30
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking hyper-router v0.5.0
[INFO] [stderr]     Checking serde v1.0.92
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking highload v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `real_main`
[INFO] [stderr]   --> src/lib.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn real_main(file_path: &str) -> Result<(), ZipError> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_json`
[INFO] [stderr]   --> src/lib.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn read_json(file_path: &str) -> Result<(), ZipError> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.44s
[INFO] running `"docker" "inspect" "dbf906bceb1f4130545f997200c8588e23444efd72664d49147ce7fc122356c2"`
[INFO] running `"docker" "rm" "-f" "dbf906bceb1f4130545f997200c8588e23444efd72664d49147ce7fc122356c2"`
[INFO] [stdout] dbf906bceb1f4130545f997200c8588e23444efd72664d49147ce7fc122356c2