[INFO] cloning repository https://github.com/zsjssj/rust_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zsjssj/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzsjssj%2Frust_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzsjssj%2Frust_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da0eb98f1f375cd6dd416c8170aace75c3271b45
[INFO] checking zsjssj/rust_learn against master#9b81629631b382fd49ee3a20ac47797b1467e52d for pr-146095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzsjssj%2Frust_learn" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zsjssj/rust_learn
[INFO] finished tweaking git repo https://github.com/zsjssj/rust_learn
[INFO] tweaked toml for git repo https://github.com/zsjssj/rust_learn written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zsjssj/rust_learn on toolchain 9b81629631b382fd49ee3a20ac47797b1467e52d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b81629631b382fd49ee3a20ac47797b1467e52d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zsjssj/rust_learn 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" "+9b81629631b382fd49ee3a20ac47797b1467e52d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+9b81629631b382fd49ee3a20ac47797b1467e52d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdc619f9f8afc05f0b6a0e36ed018494bf5efa8aefde6164f97fe653e83f0941
[INFO] running `Command { std: "docker" "start" "-a" "fdc619f9f8afc05f0b6a0e36ed018494bf5efa8aefde6164f97fe653e83f0941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdc619f9f8afc05f0b6a0e36ed018494bf5efa8aefde6164f97fe653e83f0941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdc619f9f8afc05f0b6a0e36ed018494bf5efa8aefde6164f97fe653e83f0941", kill_on_drop: false }`
[INFO] [stdout] fdc619f9f8afc05f0b6a0e36ed018494bf5efa8aefde6164f97fe653e83f0941
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+9b81629631b382fd49ee3a20ac47797b1467e52d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c92186546d3be6f3df1c98cd320ff19813fd04e868c85ea8555ef262e5bb184b
[INFO] running `Command { std: "docker" "start" "-a" "c92186546d3be6f3df1c98cd320ff19813fd04e868c85ea8555ef262e5bb184b", kill_on_drop: false }`
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[INFO] [stdout] hello attribute macro
[INFO] [stdout] my_attr attribute macro: attr = a, b = 1
[INFO] [stdout] hello attribute macro
[INFO] [stdout] my_attr attribute macro: attr = a, b = 1
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[INFO] running `Command { std: "docker" "inspect" "c92186546d3be6f3df1c98cd320ff19813fd04e868c85ea8555ef262e5bb184b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c92186546d3be6f3df1c98cd320ff19813fd04e868c85ea8555ef262e5bb184b", kill_on_drop: false }`
[INFO] [stdout] c92186546d3be6f3df1c98cd320ff19813fd04e868c85ea8555ef262e5bb184b