[INFO] cloning repository https://github.com/tiennv1997/comprehensive-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tiennv1997/comprehensive-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiennv1997%2Fcomprehensive-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiennv1997%2Fcomprehensive-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a53b263ca2f0328b8658d62b5ad43a43ba33e6db
[INFO] checking tiennv1997/comprehensive-rust against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiennv1997%2Fcomprehensive-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tiennv1997/comprehensive-rust on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tiennv1997/comprehensive-rust
[INFO] finished tweaking git repo https://github.com/tiennv1997/comprehensive-rust
[INFO] tweaked toml for git repo https://github.com/tiennv1997/comprehensive-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tiennv1997/comprehensive-rust 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e2f93acb5bca277c447ae2753f21c84694295b07a011a2f2543e43a525e7271
[INFO] running `Command { std: "docker" "start" "-a" "6e2f93acb5bca277c447ae2753f21c84694295b07a011a2f2543e43a525e7271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e2f93acb5bca277c447ae2753f21c84694295b07a011a2f2543e43a525e7271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e2f93acb5bca277c447ae2753f21c84694295b07a011a2f2543e43a525e7271", kill_on_drop: false }`
[INFO] [stdout] 6e2f93acb5bca277c447ae2753f21c84694295b07a011a2f2543e43a525e7271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7be462729c626d36285b63e04f284bd5a809edd4645cb0e4421486a78280cb89
[INFO] running `Command { std: "docker" "start" "-a" "7be462729c626d36285b63e04f284bd5a809edd4645cb0e4421486a78280cb89", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking webserver v0.1.0 (/opt/rustwide/workdir/webserver)
[INFO] [stderr]     Checking arrays-for-loops v0.1.0 (/opt/rustwide/workdir/arrays-for-loops)
[INFO] [stderr]     Checking strings-and-iterators v0.1.0 (/opt/rustwide/workdir/strings-and-iterators)
[INFO] [stderr]     Checking design-a-library v0.1.0 (/opt/rustwide/workdir/design-a-library)
[INFO] [stderr]     Checking simple-gui v0.1.0 (/opt/rustwide/workdir/simple-gui)
[INFO] [stderr]     Checking luhn v0.1.0 (/opt/rustwide/workdir/luhn)
[INFO] [stderr]     Checking concurrent v0.1.0 (/opt/rustwide/workdir/concurrent)
[INFO] [stderr]     Checking health-statistics v0.1.0 (/opt/rustwide/workdir/health-statistics)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "7be462729c626d36285b63e04f284bd5a809edd4645cb0e4421486a78280cb89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7be462729c626d36285b63e04f284bd5a809edd4645cb0e4421486a78280cb89", kill_on_drop: false }`
[INFO] [stdout] 7be462729c626d36285b63e04f284bd5a809edd4645cb0e4421486a78280cb89