[INFO] cloning repository https://github.com/Aditya925/Combiner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aditya925/Combiner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAditya925%2FCombiner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAditya925%2FCombiner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df0992dd449aa8badb9849f87f0fcbd29f939391
[INFO] checking Aditya925/Combiner against master#f557a4fd462a779c92e4e8bd004426cf329efb30 for pr-111063
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAditya925%2FCombiner" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Aditya925/Combiner on toolchain f557a4fd462a779c92e4e8bd004426cf329efb30
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f557a4fd462a779c92e4e8bd004426cf329efb30" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Aditya925/Combiner
[INFO] finished tweaking git repo https://github.com/Aditya925/Combiner
[INFO] tweaked toml for git repo https://github.com/Aditya925/Combiner written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Aditya925/Combiner 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" "+f557a4fd462a779c92e4e8bd004426cf329efb30" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jpeg-decoder v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+f557a4fd462a779c92e4e8bd004426cf329efb30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b62a71329cb9660db7e14db2625c5e92829ca66ac98d57d116f2425667e54585
[INFO] running `Command { std: "docker" "start" "-a" "b62a71329cb9660db7e14db2625c5e92829ca66ac98d57d116f2425667e54585", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b62a71329cb9660db7e14db2625c5e92829ca66ac98d57d116f2425667e54585", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b62a71329cb9660db7e14db2625c5e92829ca66ac98d57d116f2425667e54585", kill_on_drop: false }`
[INFO] [stdout] b62a71329cb9660db7e14db2625c5e92829ca66ac98d57d116f2425667e54585
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+f557a4fd462a779c92e4e8bd004426cf329efb30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96c98954d1d12965287a7a3f63c92782daec83a8308ad3bea8746f84eb5e8724
[INFO] running `Command { std: "docker" "start" "-a" "96c98954d1d12965287a7a3f63c92782daec83a8308ad3bea8746f84eb5e8724", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking jpeg-decoder v0.2.4
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.12
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Checking combiner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fs::File`, `io::BufReader`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{ io::BufReader, fs::File};
[INFO] [stdout]   |            ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fs::File`, `io::BufReader`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{ io::BufReader, fs::File};
[INFO] [stdout]   |            ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.75s
[INFO] running `Command { std: "docker" "inspect" "96c98954d1d12965287a7a3f63c92782daec83a8308ad3bea8746f84eb5e8724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96c98954d1d12965287a7a3f63c92782daec83a8308ad3bea8746f84eb5e8724", kill_on_drop: false }`
[INFO] [stdout] 96c98954d1d12965287a7a3f63c92782daec83a8308ad3bea8746f84eb5e8724