[INFO] cloning repository https://github.com/cleissonbarbosa/ml-linear-regression
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cleissonbarbosa/ml-linear-regression" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcleissonbarbosa%2Fml-linear-regression", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcleissonbarbosa%2Fml-linear-regression'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d03ed94d790da3caba5c146b0aef6c089adc7db1
[INFO] building cleissonbarbosa/ml-linear-regression against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcleissonbarbosa%2Fml-linear-regression" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cleissonbarbosa/ml-linear-regression on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cleissonbarbosa/ml-linear-regression
[INFO] finished tweaking git repo https://github.com/cleissonbarbosa/ml-linear-regression
[INFO] tweaked toml for git repo https://github.com/cleissonbarbosa/ml-linear-regression written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cleissonbarbosa/ml-linear-regression 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f332fe2fbf8beb7fc0dff8e140768f265b274f95caf5ea9c373ef0515044b589
[INFO] running `Command { std: "docker" "start" "-a" "f332fe2fbf8beb7fc0dff8e140768f265b274f95caf5ea9c373ef0515044b589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f332fe2fbf8beb7fc0dff8e140768f265b274f95caf5ea9c373ef0515044b589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f332fe2fbf8beb7fc0dff8e140768f265b274f95caf5ea9c373ef0515044b589", kill_on_drop: false }`
[INFO] [stdout] f332fe2fbf8beb7fc0dff8e140768f265b274f95caf5ea9c373ef0515044b589
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ecf998e99e5edbe81224e3dbab6afa3e927df6a473b370ca7fddf257dc00e8d
[INFO] running `Command { std: "docker" "start" "-a" "1ecf998e99e5edbe81224e3dbab6afa3e927df6a473b370ca7fddf257dc00e8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling smallvec v1.11.1
[INFO] [stderr]    Compiling linfa v0.7.0
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling sprs v0.11.1
[INFO] [stderr]    Compiling argmin-math v0.3.0
[INFO] [stderr]    Compiling linfa-linalg v0.1.0
[INFO] [stderr]    Compiling argmin v0.8.1
[INFO] [stderr]    Compiling linfa-linear v0.7.0
[INFO] [stderr]    Compiling introduction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.44s
[INFO] running `Command { std: "docker" "inspect" "1ecf998e99e5edbe81224e3dbab6afa3e927df6a473b370ca7fddf257dc00e8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ecf998e99e5edbe81224e3dbab6afa3e927df6a473b370ca7fddf257dc00e8d", kill_on_drop: false }`
[INFO] [stdout] 1ecf998e99e5edbe81224e3dbab6afa3e927df6a473b370ca7fddf257dc00e8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b24147fdb866e51578d5c50ff0207475301718d2d14e2ef85843f726bad9c988
[INFO] running `Command { std: "docker" "start" "-a" "b24147fdb866e51578d5c50ff0207475301718d2d14e2ef85843f726bad9c988", kill_on_drop: false }`
[INFO] [stderr]    Compiling introduction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "b24147fdb866e51578d5c50ff0207475301718d2d14e2ef85843f726bad9c988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b24147fdb866e51578d5c50ff0207475301718d2d14e2ef85843f726bad9c988", kill_on_drop: false }`
[INFO] [stdout] b24147fdb866e51578d5c50ff0207475301718d2d14e2ef85843f726bad9c988