[INFO] cloning repository https://github.com/Tempost/programming-rust-book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tempost/programming-rust-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTempost%2Fprogramming-rust-book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTempost%2Fprogramming-rust-book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ba3ecf0c172709700525612fcc5e84f6eda3eb5
[INFO] testing Tempost/programming-rust-book against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTempost%2Fprogramming-rust-book" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Tempost/programming-rust-book
[INFO] finished tweaking git repo https://github.com/Tempost/programming-rust-book
[INFO] tweaked toml for git repo https://github.com/Tempost/programming-rust-book written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Tempost/programming-rust-book on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Tempost/programming-rust-book 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b0642a33757adfabc9ea11a5e57a2e5cca8acfcb85af659c50510eb8ef5dd8b
[INFO] running `Command { std: "docker" "start" "-a" "4b0642a33757adfabc9ea11a5e57a2e5cca8acfcb85af659c50510eb8ef5dd8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b0642a33757adfabc9ea11a5e57a2e5cca8acfcb85af659c50510eb8ef5dd8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b0642a33757adfabc9ea11a5e57a2e5cca8acfcb85af659c50510eb8ef5dd8b", kill_on_drop: false }`
[INFO] [stdout] 4b0642a33757adfabc9ea11a5e57a2e5cca8acfcb85af659c50510eb8ef5dd8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb22d25880b6a71a7707925393ee53deac3a28c82d888c41b9e7cc87128bb765
[INFO] running `Command { std: "docker" "start" "-a" "fb22d25880b6a71a7707925393ee53deac3a28c82d888c41b9e7cc87128bb765", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling bytes v1.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling futures-sink v0.3.25
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling jobserver v0.1.25
[INFO] [stderr]    Compiling num_cpus v1.14.0
[INFO] [stderr]    Compiling cc v1.0.76
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling mio v0.8.5
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling socket2 v0.4.7
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling flate2 v1.0.24
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling bytestring v1.2.0
[INFO] [stderr]    Compiling zstd-sys v2.0.1+zstd.1.5.2
[INFO] [stderr]    Compiling local-waker v0.1.3
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]    Compiling alloc-no-stdlib v2.0.4
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling tokio-util v0.7.4
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling alloc-stdlib v0.2.2
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.3
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling regex v1.7.0
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]    Compiling actix-service v2.0.2
[INFO] [stderr]    Compiling time-macros v0.2.6
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling digest v0.10.5
[INFO] [stderr]    Compiling brotli-decompressor v2.3.2
[INFO] [stderr]    Compiling actix-rt v2.7.0
[INFO] [stderr]    Compiling actix-utils v3.0.1
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling spin v0.9.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling cookie v0.16.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]    Compiling weezl v0.1.7
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling idna v0.3.0
[INFO] [stderr]    Compiling sha1 v0.10.5
[INFO] [stderr]    Compiling actix-router v0.5.1
[INFO] [stderr]    Compiling brotli v3.3.4
[INFO] [stderr]    Compiling h2 v0.3.15
[INFO] [stderr]    Compiling time v0.3.17
[INFO] [stderr]    Compiling jpeg-decoder v0.3.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling actix-codec v0.5.0
[INFO] [stderr]    Compiling local-channel v0.1.3
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling lebe v0.5.2
[INFO] [stderr]    Compiling half v2.1.0
[INFO] [stderr]    Compiling language-tags v0.3.2
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling gif v0.11.4
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling tiff v0.8.0
[INFO] [stderr]    Compiling url v2.3.1
[INFO] [stderr]    Compiling png v0.17.7
[INFO] [stderr]    Compiling actix-server v2.1.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling actix-macros v0.2.3
[INFO] [stderr]    Compiling actix-web-codegen v4.1.0
[INFO] [stderr]    Compiling num-complex v0.4.2
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling bytemuck v1.12.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling crossbeam v0.8.2
[INFO] [stderr]    Compiling text-colorizer v1.0.0
[INFO] [stderr]    Compiling chapter_3 v0.1.0 (/opt/rustwide/workdir/chapter_3)
[INFO] [stderr]    Compiling chapter_9 v0.1.0 (/opt/rustwide/workdir/chapter_9)
[INFO] [stderr]    Compiling chapter_7 v0.1.0 (/opt/rustwide/workdir/chapter_7)
[INFO] [stderr]    Compiling chapter_4 v0.1.0 (/opt/rustwide/workdir/chapter_4)
[INFO] [stderr]    Compiling chapter_8 v0.1.0 (/opt/rustwide/workdir/chapter_8)
[INFO] [stdout] warning: struct `StringTable` is never constructed
[INFO] [stdout]   --> chapter_4/src/main.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct StringTable {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_by_prefix` is never used
[INFO] [stdout]   --> chapter_4/src/main.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl StringTable {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn find_by_prefix(&self, prefix: &str) -> Option<&String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pin-project v1.0.12
[INFO] [stderr]    Compiling flume v0.10.14
[INFO] [stderr]    Compiling exr v1.5.2
[INFO] [stderr]    Compiling image v0.24.5
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]    Compiling actix-http v3.2.2
[INFO] [stderr]    Compiling actix-web v4.2.1
[INFO] [stderr]    Compiling chapter_2 v0.1.0 (/opt/rustwide/workdir/chapter_2)
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 10m 03s
[INFO] running `Command { std: "docker" "inspect" "fb22d25880b6a71a7707925393ee53deac3a28c82d888c41b9e7cc87128bb765", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb22d25880b6a71a7707925393ee53deac3a28c82d888c41b9e7cc87128bb765", kill_on_drop: false }`
[INFO] [stdout] fb22d25880b6a71a7707925393ee53deac3a28c82d888c41b9e7cc87128bb765
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f28047bbf60d97ba95eaeb096fe99a6d9fd087ac2c9f6b6d881daeebfb2555ed
[INFO] running `Command { std: "docker" "start" "-a" "f28047bbf60d97ba95eaeb096fe99a6d9fd087ac2c9f6b6d881daeebfb2555ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling chapter_3 v0.1.0 (/opt/rustwide/workdir/chapter_3)
[INFO] [stderr]    Compiling chapter_7 v0.1.0 (/opt/rustwide/workdir/chapter_7)
[INFO] [stderr]    Compiling chapter_8 v0.1.0 (/opt/rustwide/workdir/chapter_8)
[INFO] [stderr]    Compiling chapter_2 v0.1.0 (/opt/rustwide/workdir/chapter_2)
[INFO] [stderr]    Compiling chapter_9 v0.1.0 (/opt/rustwide/workdir/chapter_9)
[INFO] [stderr]    Compiling chapter_4 v0.1.0 (/opt/rustwide/workdir/chapter_4)
[INFO] [stdout] warning: struct `StringTable` is never constructed
[INFO] [stdout]   --> chapter_4/src/main.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct StringTable {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_by_prefix` is never used
[INFO] [stdout]   --> chapter_4/src/main.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl StringTable {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn find_by_prefix(&self, prefix: &str) -> Option<&String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "f28047bbf60d97ba95eaeb096fe99a6d9fd087ac2c9f6b6d881daeebfb2555ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f28047bbf60d97ba95eaeb096fe99a6d9fd087ac2c9f6b6d881daeebfb2555ed", kill_on_drop: false }`
[INFO] [stdout] f28047bbf60d97ba95eaeb096fe99a6d9fd087ac2c9f6b6d881daeebfb2555ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 74f5c7411d67fca0ea562d54ce65012e89e1e0470b8dd3c3302be3bb86c351c2
[INFO] running `Command { std: "docker" "start" "-a" "74f5c7411d67fca0ea562d54ce65012e89e1e0470b8dd3c3302be3bb86c351c2", kill_on_drop: false }`
[INFO] [stderr] warning: struct `StringTable` is never constructed
[INFO] [stderr]   --> chapter_4/src/main.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | struct StringTable {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `find_by_prefix` is never used
[INFO] [stderr]   --> chapter_4/src/main.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 54 | impl StringTable {
[INFO] [stderr]    | ---------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 57 |     fn find_by_prefix(&self, prefix: &str) -> Option<&String> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `chapter_4` (bin "chapter_4" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/chapter_2-d4281f82949d54ee)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_gcd ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/actix_gcd.rs (/opt/rustwide/target/debug/deps/actix_gcd-7392b6ff6522da0c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/cc_mandlebrot.rs (/opt/rustwide/target/debug/deps/cc_mandlebrot-7539ed470c8fccbb)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_pixel_to_point ... ok
[INFO] [stdout] test test_parse_pair ... ok
[INFO] [stdout] test test_parse_complex ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/cmd_line.rs (/opt/rustwide/target/debug/deps/cmd_line-edd1df907763a239)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/quickreplace.rs (/opt/rustwide/target/debug/deps/quickreplace-9a9f771066d30d65)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chapter_3-3040b6c696282c05)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chapter_4-22cf4544d09d2484)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chapter_7-a7ed60d6ed19ea1a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/chapter_8-a64b570a52264c4c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chapter_9-cb553c9e53bb6d90)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chapter_2
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chapter_8
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "74f5c7411d67fca0ea562d54ce65012e89e1e0470b8dd3c3302be3bb86c351c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74f5c7411d67fca0ea562d54ce65012e89e1e0470b8dd3c3302be3bb86c351c2", kill_on_drop: false }`
[INFO] [stdout] 74f5c7411d67fca0ea562d54ce65012e89e1e0470b8dd3c3302be3bb86c351c2
