[INFO] cloning repository https://github.com/yuk1ty/learning-systems-programming-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuk1ty/learning-systems-programming-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Flearning-systems-programming-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Flearning-systems-programming-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fe8224bdf40132a9730a53550a8a4474a8bb965e
[INFO] building yuk1ty/learning-systems-programming-in-rust against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Flearning-systems-programming-in-rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yuk1ty/learning-systems-programming-in-rust on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/yuk1ty/learning-systems-programming-in-rust
[INFO] finished tweaking git repo https://github.com/yuk1ty/learning-systems-programming-in-rust
[INFO] tweaked toml for git repo https://github.com/yuk1ty/learning-systems-programming-in-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/yuk1ty/learning-systems-programming-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfc3b8017b4d93a8fc3ab757397ef7aeffaecd3f66e6cdc462754f912c190d21
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dfc3b8017b4d93a8fc3ab757397ef7aeffaecd3f66e6cdc462754f912c190d21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfc3b8017b4d93a8fc3ab757397ef7aeffaecd3f66e6cdc462754f912c190d21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfc3b8017b4d93a8fc3ab757397ef7aeffaecd3f66e6cdc462754f912c190d21", kill_on_drop: false }`
[INFO] [stdout] dfc3b8017b4d93a8fc3ab757397ef7aeffaecd3f66e6cdc462754f912c190d21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1f2c3aae59765802a612c57b816e5d4fcb06f9458ba9a1fbb7522dc74755b27
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d1f2c3aae59765802a612c57b816e5d4fcb06f9458ba9a1fbb7522dc74755b27", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling memmap2 v0.2.2
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling lib v0.1.0 (/opt/rustwide/workdir/lib)
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling chapter13 v0.1.0 (/opt/rustwide/workdir/chapter13)
[INFO] [stderr]    Compiling chapter9 v0.1.0 (/opt/rustwide/workdir/chapter9)
[INFO] [stderr]    Compiling chapter17 v0.1.0 (/opt/rustwide/workdir/chapter17)
[INFO] [stderr]    Compiling chapter6 v0.1.0 (/opt/rustwide/workdir/chapter6)
[INFO] [stderr]    Compiling chapter2 v0.1.0 (/opt/rustwide/workdir/chapter2)
[INFO] [stderr]    Compiling chapter8 v0.1.0 (/opt/rustwide/workdir/chapter8)
[INFO] [stderr]    Compiling chapter11 v0.1.0 (/opt/rustwide/workdir/chapter11)
[INFO] [stderr]    Compiling chapter7 v0.1.0 (/opt/rustwide/workdir/chapter7)
[INFO] [stderr]    Compiling chapter1 v0.1.0 (/opt/rustwide/workdir/chapter1)
[INFO] [stderr]    Compiling chapter16 v0.1.0 (/opt/rustwide/workdir/chapter16)
[INFO] [stderr]    Compiling chapter12 v0.1.0 (/opt/rustwide/workdir/chapter12)
[INFO] [stderr]    Compiling chapter5 v0.1.0 (/opt/rustwide/workdir/chapter5)
[INFO] [stderr]    Compiling appendix v0.1.0 (/opt/rustwide/workdir/appendix)
[INFO] [stderr]    Compiling chapter15 v0.1.0 (/opt/rustwide/workdir/chapter15)
[INFO] [stderr]    Compiling chapter14 v0.1.0 (/opt/rustwide/workdir/chapter14)
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling chapter10 v0.1.0 (/opt/rustwide/workdir/chapter10)
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling zip v0.5.12
[INFO] [stderr]    Compiling chapter3 v0.1.0 (/opt/rustwide/workdir/chapter3)
[INFO] [stderr]    Compiling chapter4 v0.1.0 (/opt/rustwide/workdir/chapter4)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.03s
[INFO] running `Command { std: "docker" "inspect" "d1f2c3aae59765802a612c57b816e5d4fcb06f9458ba9a1fbb7522dc74755b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1f2c3aae59765802a612c57b816e5d4fcb06f9458ba9a1fbb7522dc74755b27", kill_on_drop: false }`
[INFO] [stdout] d1f2c3aae59765802a612c57b816e5d4fcb06f9458ba9a1fbb7522dc74755b27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b496585d76afb97fbfbc6947bc1d4b48b245fe429b954202799f0aa20706fcda
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b496585d76afb97fbfbc6947bc1d4b48b245fe429b954202799f0aa20706fcda", kill_on_drop: false }`
[INFO] [stderr]    Compiling lib v0.1.0 (/opt/rustwide/workdir/lib)
[INFO] [stderr]    Compiling chapter2 v0.1.0 (/opt/rustwide/workdir/chapter2)
[INFO] [stderr]    Compiling chapter7 v0.1.0 (/opt/rustwide/workdir/chapter7)
[INFO] [stderr]    Compiling chapter12 v0.1.0 (/opt/rustwide/workdir/chapter12)
[INFO] [stderr]    Compiling chapter6 v0.1.0 (/opt/rustwide/workdir/chapter6)
[INFO] [stderr]    Compiling chapter1 v0.1.0 (/opt/rustwide/workdir/chapter1)
[INFO] [stderr]    Compiling chapter9 v0.1.0 (/opt/rustwide/workdir/chapter9)
[INFO] [stderr]    Compiling chapter13 v0.1.0 (/opt/rustwide/workdir/chapter13)
[INFO] [stderr]    Compiling chapter16 v0.1.0 (/opt/rustwide/workdir/chapter16)
[INFO] [stderr]    Compiling chapter8 v0.1.0 (/opt/rustwide/workdir/chapter8)
[INFO] [stderr]    Compiling chapter14 v0.1.0 (/opt/rustwide/workdir/chapter14)
[INFO] [stderr]    Compiling chapter5 v0.1.0 (/opt/rustwide/workdir/chapter5)
[INFO] [stderr]    Compiling appendix v0.1.0 (/opt/rustwide/workdir/appendix)
[INFO] [stderr]    Compiling chapter11 v0.1.0 (/opt/rustwide/workdir/chapter11)
[INFO] [stderr]    Compiling chapter15 v0.1.0 (/opt/rustwide/workdir/chapter15)
[INFO] [stderr]    Compiling chapter17 v0.1.0 (/opt/rustwide/workdir/chapter17)
[INFO] [stderr]    Compiling chapter4 v0.1.0 (/opt/rustwide/workdir/chapter4)
[INFO] [stderr]    Compiling chapter10 v0.1.0 (/opt/rustwide/workdir/chapter10)
[INFO] [stderr]    Compiling chapter3 v0.1.0 (/opt/rustwide/workdir/chapter3)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.46s
[INFO] running `Command { std: "docker" "inspect" "b496585d76afb97fbfbc6947bc1d4b48b245fe429b954202799f0aa20706fcda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b496585d76afb97fbfbc6947bc1d4b48b245fe429b954202799f0aa20706fcda", kill_on_drop: false }`
[INFO] [stdout] b496585d76afb97fbfbc6947bc1d4b48b245fe429b954202799f0aa20706fcda
