[INFO] cloning repository https://github.com/wouerner/aprender-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wouerner/aprender-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwouerner%2Faprender-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwouerner%2Faprender-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6aa85b9652b88ea3dfb46e9b6243ef54c6492db
[INFO] testing wouerner/aprender-rust against try#fc4ba03ef77ca5018fb78a097d3b924d30f15bfc+target=i686-unknown-linux-musl for musl_upgrade_1_2_take4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwouerner%2Faprender-rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wouerner/aprender-rust on toolchain fc4ba03ef77ca5018fb78a097d3b924d30f15bfc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wouerner/aprender-rust
[INFO] finished tweaking git repo https://github.com/wouerner/aprender-rust
[INFO] tweaked toml for git repo https://github.com/wouerner/aprender-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/wouerner/aprender-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d60972ede21736ae8e1a94e33c81ebab77c62873634df9db064a6b98715ad17
[INFO] running `Command { std: "docker" "start" "-a" "6d60972ede21736ae8e1a94e33c81ebab77c62873634df9db064a6b98715ad17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d60972ede21736ae8e1a94e33c81ebab77c62873634df9db064a6b98715ad17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d60972ede21736ae8e1a94e33c81ebab77c62873634df9db064a6b98715ad17", kill_on_drop: false }`
[INFO] [stdout] 6d60972ede21736ae8e1a94e33c81ebab77c62873634df9db064a6b98715ad17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] e7b09c9cfa6ffc84bf781a3d683ead3e1a95bfd16a84dbd8c335770ea6c40844
[INFO] running `Command { std: "docker" "start" "-a" "e7b09c9cfa6ffc84bf781a3d683ead3e1a95bfd16a84dbd8c335770ea6c40844", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr] thread '<unnamed>' panicked at 'assertion failed: pos.get() <= self.position()', compiler/rustc_metadata/src/rmeta/encoder.rs:426:9
[INFO] [stderr] error: could not compile `libc`
[INFO] running `Command { std: "docker" "inspect" "e7b09c9cfa6ffc84bf781a3d683ead3e1a95bfd16a84dbd8c335770ea6c40844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7b09c9cfa6ffc84bf781a3d683ead3e1a95bfd16a84dbd8c335770ea6c40844", kill_on_drop: false }`
[INFO] [stdout] e7b09c9cfa6ffc84bf781a3d683ead3e1a95bfd16a84dbd8c335770ea6c40844