[INFO] cloning repository https://github.com/Nineball54/file-size-distro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nineball54/file-size-distro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNineball54%2Ffile-size-distro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNineball54%2Ffile-size-distro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 373206b1486a53706f2362986427a40dedd5af9b
[INFO] testing Nineball54/file-size-distro against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNineball54%2Ffile-size-distro" "/workspace/builds/worker-98/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-98/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nineball54/file-size-distro on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nineball54/file-size-distro
[INFO] finished tweaking git repo https://github.com/Nineball54/file-size-distro
[INFO] tweaked toml for git repo https://github.com/Nineball54/file-size-distro written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4dd64cb3b1f07dd02e3a25770a09fba05647f1f0149da888fd4429d2cf10e80f
[INFO] running `Command { std: "docker" "start" "-a" "4dd64cb3b1f07dd02e3a25770a09fba05647f1f0149da888fd4429d2cf10e80f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dd64cb3b1f07dd02e3a25770a09fba05647f1f0149da888fd4429d2cf10e80f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd64cb3b1f07dd02e3a25770a09fba05647f1f0149da888fd4429d2cf10e80f", kill_on_drop: false }`
[INFO] [stdout] 4dd64cb3b1f07dd02e3a25770a09fba05647f1f0149da888fd4429d2cf10e80f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6d42273319d7bf79a5d467571043313162dbbeacf4a5f9fbaa3ff9996469b63
[INFO] running `Command { std: "docker" "start" "-a" "a6d42273319d7bf79a5d467571043313162dbbeacf4a5f9fbaa3ff9996469b63", kill_on_drop: false }`
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling file-size-distro v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.96s
[INFO] running `Command { std: "docker" "inspect" "a6d42273319d7bf79a5d467571043313162dbbeacf4a5f9fbaa3ff9996469b63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6d42273319d7bf79a5d467571043313162dbbeacf4a5f9fbaa3ff9996469b63", kill_on_drop: false }`
[INFO] [stdout] a6d42273319d7bf79a5d467571043313162dbbeacf4a5f9fbaa3ff9996469b63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d734579a9b89435a5dcbf7dd7f51afb5c85e17cb3976b488f4a171fcd1a1b800
[INFO] running `Command { std: "docker" "start" "-a" "d734579a9b89435a5dcbf7dd7f51afb5c85e17cb3976b488f4a171fcd1a1b800", kill_on_drop: false }`
[INFO] [stderr]    Compiling file-size-distro v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `File`
[INFO] [stdout]    --> src/main.rs:188:24
[INFO] [stdout]     |
[INFO] [stdout] 188 |         let mut file = File::create("testing.txt").expect("could not create test file");
[INFO] [stdout]     |                        ^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 181 |     use std::fs::File;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]    --> src/main.rs:186:13
[INFO] [stdout]     |
[INFO] [stdout] 186 |         use std::io::prelude::*;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `file-size-distro` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d734579a9b89435a5dcbf7dd7f51afb5c85e17cb3976b488f4a171fcd1a1b800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d734579a9b89435a5dcbf7dd7f51afb5c85e17cb3976b488f4a171fcd1a1b800", kill_on_drop: false }`
[INFO] [stdout] d734579a9b89435a5dcbf7dd7f51afb5c85e17cb3976b488f4a171fcd1a1b800