[INFO] cloning repository https://github.com/gauravsinha12/Rusty-compressor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gauravsinha12/Rusty-compressor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgauravsinha12%2FRusty-compressor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgauravsinha12%2FRusty-compressor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc9535851d0630397139682a591482bf0fe10d40
[INFO] checking gauravsinha12/Rusty-compressor against master#3350c1eb3fd8fe1bee1ed4c76944d707bd256876 for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgauravsinha12%2FRusty-compressor" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gauravsinha12/Rusty-compressor on toolchain 3350c1eb3fd8fe1bee1ed4c76944d707bd256876
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gauravsinha12/Rusty-compressor
[INFO] finished tweaking git repo https://github.com/gauravsinha12/Rusty-compressor
[INFO] tweaked toml for git repo https://github.com/gauravsinha12/Rusty-compressor written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gauravsinha12/Rusty-compressor 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" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c881ca84c94307e80315e7090f3982f696971db8174cd857dfaae68b82d9a89
[INFO] running `Command { std: "docker" "start" "-a" "3c881ca84c94307e80315e7090f3982f696971db8174cd857dfaae68b82d9a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c881ca84c94307e80315e7090f3982f696971db8174cd857dfaae68b82d9a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c881ca84c94307e80315e7090f3982f696971db8174cd857dfaae68b82d9a89", kill_on_drop: false }`
[INFO] [stdout] 3c881ca84c94307e80315e7090f3982f696971db8174cd857dfaae68b82d9a89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a95694202d9830f84fd552b23eab60b138a55afb98814e9485e26512d317bddb
[INFO] running `Command { std: "docker" "start" "-a" "a95694202d9830f84fd552b23eab60b138a55afb98814e9485e26512d317bddb", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking rusty-compressor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `by_ref` found for struct `BufReader` in the current scope
[INFO] [stdout]   --> src/main.rs:43:45
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let bytes_copied = io::copy(&mut reader.by_ref(), &mut encoder)?;
[INFO] [stdout]    |                                             ^^^^^^ method not found in `BufReader<File>`
[INFO] [stdout]   --> /rustc/3350c1eb3fd8fe1bee1ed4c76944d707bd256876/library/std/src/io/mod.rs:1093:8
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method is available for `BufReader<File>` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Read` which provides `by_ref` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::io::Read;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-compressor` (bin "rusty-compressor" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `by_ref` found for struct `BufReader` in the current scope
[INFO] [stdout]   --> src/main.rs:43:45
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let bytes_copied = io::copy(&mut reader.by_ref(), &mut encoder)?;
[INFO] [stdout]    |                                             ^^^^^^ method not found in `BufReader<File>`
[INFO] [stdout]   --> /rustc/3350c1eb3fd8fe1bee1ed4c76944d707bd256876/library/std/src/io/mod.rs:1093:8
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method is available for `BufReader<File>` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Read` which provides `by_ref` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::io::Read;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-compressor` (bin "rusty-compressor") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a95694202d9830f84fd552b23eab60b138a55afb98814e9485e26512d317bddb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a95694202d9830f84fd552b23eab60b138a55afb98814e9485e26512d317bddb", kill_on_drop: false }`
[INFO] [stdout] a95694202d9830f84fd552b23eab60b138a55afb98814e9485e26512d317bddb