[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] ecae58c5a18ee0dcd33f602218de0b88e7570950 [INFO] testing yuk1ty/learning-systems-programming-in-rust against beta-2022-02-22 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuk1ty%2Flearning-systems-programming-in-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/yuk1ty/learning-systems-programming-in-rust on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-5/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-5/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" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rayon-core v1.9.1 [INFO] [stderr] Downloaded filetime v0.2.14 [INFO] [stderr] Downloaded nix v0.21.0 [INFO] [stderr] Downloaded memmap2 v0.2.2 [INFO] [stderr] Downloaded zip v0.5.12 [INFO] [stderr] Downloaded tokio-macros v1.2.0 [INFO] [stderr] Downloaded nix v0.20.0 [INFO] [stderr] Downloaded memoffset v0.6.4 [INFO] [stderr] Downloaded bzip2-sys v0.1.10+1.0.8 [INFO] [stderr] Downloaded tokio v1.6.0 [INFO] [stderr] Downloaded sysinfo v0.18.1 [INFO] [stderr] Downloaded crossbeam-epoch v0.9.5 [INFO] [stderr] Downloaded rayon v1.5.1 [INFO] [stderr] Downloaded libc v0.2.95 [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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8feea99c90e4aaed38782a959e77ca3927673a5fb52ef6e4f59222a872421a1b [INFO] running `Command { std: "docker" "start" "-a" "8feea99c90e4aaed38782a959e77ca3927673a5fb52ef6e4f59222a872421a1b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8feea99c90e4aaed38782a959e77ca3927673a5fb52ef6e4f59222a872421a1b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8feea99c90e4aaed38782a959e77ca3927673a5fb52ef6e4f59222a872421a1b", kill_on_drop: false }` [INFO] [stdout] 8feea99c90e4aaed38782a959e77ca3927673a5fb52ef6e4f59222a872421a1b [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=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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] af643d63de6a48cdbd1dac3ce5f1afc3abae40ba60ed63adeb6cbc7ee9dc419f [INFO] running `Command { std: "docker" "start" "-a" "af643d63de6a48cdbd1dac3ce5f1afc3abae40ba60ed63adeb6cbc7ee9dc419f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.95 [INFO] [stderr] Compiling crc32fast v1.2.1 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Compiling adler v1.0.2 [INFO] [stderr] Compiling httparse v1.4.1 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling crossbeam-epoch v0.9.5 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Compiling itoa v0.4.7 [INFO] [stderr] Compiling sysinfo v0.18.1 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling bytes v1.0.1 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling bzip2-sys v0.1.10+1.0.8 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling tokio v1.6.0 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling crossbeam-channel v0.5.1 [INFO] [stderr] Compiling crossbeam-deque v0.8.0 [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 num_cpus v1.13.0 [INFO] [stderr] Compiling nix v0.21.0 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [INFO] [stderr] Compiling signal-hook-registry v1.3.0 [INFO] [stderr] Compiling mio v0.7.11 [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 memmap2 v0.2.2 [INFO] [stderr] Compiling nix v0.20.0 [INFO] [stderr] Compiling bzip2 v0.3.3 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling rand_core v0.6.2 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling chrono v0.4.19 [INFO] [stderr] Compiling rand_chacha v0.3.0 [INFO] [stderr] Compiling rand v0.8.3 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling lib v0.1.0 (/opt/rustwide/workdir/lib) [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling chapter9 v0.1.0 (/opt/rustwide/workdir/chapter9) [INFO] [stderr] Compiling chapter16 v0.1.0 (/opt/rustwide/workdir/chapter16) [INFO] [stderr] Compiling appendix v0.1.0 (/opt/rustwide/workdir/appendix) [INFO] [stderr] Compiling chapter13 v0.1.0 (/opt/rustwide/workdir/chapter13) [INFO] [stderr] Compiling chapter6 v0.1.0 (/opt/rustwide/workdir/chapter6) [INFO] [stderr] Compiling chapter12 v0.1.0 (/opt/rustwide/workdir/chapter12) [INFO] [stderr] Compiling chapter1 v0.1.0 (/opt/rustwide/workdir/chapter1) [INFO] [stderr] Compiling chapter7 v0.1.0 (/opt/rustwide/workdir/chapter7) [INFO] [stderr] Compiling chapter8 v0.1.0 (/opt/rustwide/workdir/chapter8) [INFO] [stderr] Compiling chapter5 v0.1.0 (/opt/rustwide/workdir/chapter5) [INFO] [stderr] Compiling chapter17 v0.1.0 (/opt/rustwide/workdir/chapter17) [INFO] [stderr] Compiling chapter14 v0.1.0 (/opt/rustwide/workdir/chapter14) [INFO] [stderr] Compiling chapter15 v0.1.0 (/opt/rustwide/workdir/chapter15) [INFO] [stderr] Compiling thiserror-impl v1.0.24 [INFO] [stderr] Compiling tokio-macros v1.2.0 [INFO] [stderr] Compiling chapter2 v0.1.0 (/opt/rustwide/workdir/chapter2) [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 chapter11 v0.1.0 (/opt/rustwide/workdir/chapter11) [INFO] [stderr] Compiling chapter3 v0.1.0 (/opt/rustwide/workdir/chapter3) [INFO] [stdout] warning: field is never read: `name` [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | name: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `HeaderOwn` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | value: String, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `HeaderOwn` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling chapter4 v0.1.0 (/opt/rustwide/workdir/chapter4) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 21.86s [INFO] running `Command { std: "docker" "inspect" "af643d63de6a48cdbd1dac3ce5f1afc3abae40ba60ed63adeb6cbc7ee9dc419f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "af643d63de6a48cdbd1dac3ce5f1afc3abae40ba60ed63adeb6cbc7ee9dc419f", kill_on_drop: false }` [INFO] [stdout] af643d63de6a48cdbd1dac3ce5f1afc3abae40ba60ed63adeb6cbc7ee9dc419f [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=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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 161ad14f707299bbc669248a9f8ab2dea91ff4937e2cc443dfc84c045cc67972 [INFO] running `Command { std: "docker" "start" "-a" "161ad14f707299bbc669248a9f8ab2dea91ff4937e2cc443dfc84c045cc67972", kill_on_drop: false }` [INFO] [stderr] Compiling lib v0.1.0 (/opt/rustwide/workdir/lib) [INFO] [stderr] Compiling chapter9 v0.1.0 (/opt/rustwide/workdir/chapter9) [INFO] [stderr] Compiling chapter6 v0.1.0 (/opt/rustwide/workdir/chapter6) [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 chapter15 v0.1.0 (/opt/rustwide/workdir/chapter15) [INFO] [stderr] Compiling chapter2 v0.1.0 (/opt/rustwide/workdir/chapter2) [INFO] [stderr] Compiling chapter16 v0.1.0 (/opt/rustwide/workdir/chapter16) [INFO] [stderr] Compiling chapter13 v0.1.0 (/opt/rustwide/workdir/chapter13) [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 chapter14 v0.1.0 (/opt/rustwide/workdir/chapter14) [INFO] [stderr] Compiling chapter17 v0.1.0 (/opt/rustwide/workdir/chapter17) [INFO] [stderr] Compiling chapter8 v0.1.0 (/opt/rustwide/workdir/chapter8) [INFO] [stderr] Compiling chapter12 v0.1.0 (/opt/rustwide/workdir/chapter12) [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] Compiling chapter11 v0.1.0 (/opt/rustwide/workdir/chapter11) [INFO] [stdout] warning: field is never read: `name` [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | name: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `HeaderOwn` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | value: String, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `HeaderOwn` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `chapter4` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustc --crate-name 4_2_4 --edition=2018 chapter4/src/4_2_4/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test -C metadata=6af6fcf0a7320743 -C extra-filename=-6af6fcf0a7320743 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lib=/opt/rustwide/target/debug/deps/liblib-523b2f2eb0083f95.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-e4ab4914f6790fc4.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "161ad14f707299bbc669248a9f8ab2dea91ff4937e2cc443dfc84c045cc67972", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "161ad14f707299bbc669248a9f8ab2dea91ff4937e2cc443dfc84c045cc67972", kill_on_drop: false }` [INFO] [stdout] 161ad14f707299bbc669248a9f8ab2dea91ff4937e2cc443dfc84c045cc67972