[INFO] fetching crate qcms 0.2.0...
[INFO] testing qcms-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate qcms 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate qcms 0.2.0 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 crates.io crate qcms 0.2.0
[INFO] finished tweaking crates.io crate qcms 0.2.0
[INFO] tweaked toml for crates.io crate qcms 0.2.0 written to /workspace/builds/worker-7/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] df48d4bcdcbdc334afc519e05774dab953848e11c57f3d9d57c8290fd818a512
[INFO] running `Command { std: "docker" "start" "-a" "df48d4bcdcbdc334afc519e05774dab953848e11c57f3d9d57c8290fd818a512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df48d4bcdcbdc334afc519e05774dab953848e11c57f3d9d57c8290fd818a512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df48d4bcdcbdc334afc519e05774dab953848e11c57f3d9d57c8290fd818a512", kill_on_drop: false }`
[INFO] [stdout] df48d4bcdcbdc334afc519e05774dab953848e11c57f3d9d57c8290fd818a512
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 80bfc6c2fb531fed063b85cb9f97cd102e41060593b155c608ee50023c0bd8c7
[INFO] running `Command { std: "docker" "start" "-a" "80bfc6c2fb531fed063b85cb9f97cd102e41060593b155c608ee50023c0bd8c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling qcms v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Cannot set `RUSTC_BOOTSTRAP=1` from build script of `qcms v0.2.0 (/opt/rustwide/workdir)`.
[INFO] [stderr] note: Crates cannot set `RUSTC_BOOTSTRAP` themselves, as doing so would subvert the stability guarantees of Rust for your project.
[INFO] [stderr] help: If you're sure you want to do this in your project, set the environment variable `RUSTC_BOOTSTRAP=qcms` before running cargo instead.
[INFO] running `Command { std: "docker" "inspect" "80bfc6c2fb531fed063b85cb9f97cd102e41060593b155c608ee50023c0bd8c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80bfc6c2fb531fed063b85cb9f97cd102e41060593b155c608ee50023c0bd8c7", kill_on_drop: false }`
[INFO] [stdout] 80bfc6c2fb531fed063b85cb9f97cd102e41060593b155c608ee50023c0bd8c7