[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] checking Tempost/programming-rust-book against try#cc4c4328b2b4da72bc61f8f5984292dd73740b5e for pr-112842
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTempost%2Fprogramming-rust-book" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tempost/programming-rust-book on toolchain cc4c4328b2b4da72bc61f8f5984292dd73740b5e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cc4c4328b2b4da72bc61f8f5984292dd73740b5e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-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-2-tc2/source/Cargo.toml
[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" "+cc4c4328b2b4da72bc61f8f5984292dd73740b5e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+cc4c4328b2b4da72bc61f8f5984292dd73740b5e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5c32f31f25798a7f469da8f86504be4c0d3483ead886c46a3523406ebafe70a
[INFO] running `Command { std: "docker" "start" "-a" "e5c32f31f25798a7f469da8f86504be4c0d3483ead886c46a3523406ebafe70a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5c32f31f25798a7f469da8f86504be4c0d3483ead886c46a3523406ebafe70a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c32f31f25798a7f469da8f86504be4c0d3483ead886c46a3523406ebafe70a", kill_on_drop: false }`
[INFO] [stdout] e5c32f31f25798a7f469da8f86504be4c0d3483ead886c46a3523406ebafe70a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+cc4c4328b2b4da72bc61f8f5984292dd73740b5e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 999c661249a4a1e9ecde97a39b16ffcfaccfa3e6b3341d208758c143b906bdfa
[INFO] running `Command { std: "docker" "start" "-a" "999c661249a4a1e9ecde97a39b16ffcfaccfa3e6b3341d208758c143b906bdfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.4
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking local-waker v0.1.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking alloc-stdlib v0.2.2
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]    Compiling jobserver v0.1.25
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling cc v1.0.76
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling time-macros v0.2.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.5
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]    Compiling cookie v0.16.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling bytestring v1.2.0
[INFO] [stderr]     Checking brotli-decompressor v2.3.2
[INFO] [stderr]     Checking actix-utils v3.0.1
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]    Compiling regex v1.7.0
[INFO] [stderr]     Checking jpeg-decoder v0.3.0
[INFO] [stderr]     Checking actix-service v2.0.2
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]     Checking brotli v3.3.4
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]     Checking actix-rt v2.7.0
[INFO] [stderr]     Checking local-channel v0.1.3
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking language-tags v0.3.2
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking actix-codec v0.5.0
[INFO] [stderr]     Checking h2 v0.3.15
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking half v2.1.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking gif v0.11.4
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking actix-server v2.1.1
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking tiff v0.8.0
[INFO] [stderr]     Checking png v0.17.7
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking time v0.3.17
[INFO] [stderr]     Checking bytemuck v1.12.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking text-colorizer v1.0.0
[INFO] [stderr]     Checking chapter_9 v0.1.0 (/opt/rustwide/workdir/chapter_9)
[INFO] [stderr]     Checking chapter_8 v0.1.0 (/opt/rustwide/workdir/chapter_8)
[INFO] [stderr]     Checking chapter_7 v0.1.0 (/opt/rustwide/workdir/chapter_7)
[INFO] [stderr]     Checking 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)]` 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]     Checking chapter_3 v0.1.0 (/opt/rustwide/workdir/chapter_3)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling actix-router v0.5.1
[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)]` 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] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling zstd-sys v2.0.1+zstd.1.5.2
[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]     Checking pin-project v1.0.12
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking exr v1.5.2
[INFO] [stderr]     Checking image v0.24.5
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]     Checking actix-http v3.2.2
[INFO] [stderr]     Checking actix-web v4.2.1
[INFO] [stderr]     Checking chapter_2 v0.1.0 (/opt/rustwide/workdir/chapter_2)
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 34.13s
[INFO] running `Command { std: "docker" "inspect" "999c661249a4a1e9ecde97a39b16ffcfaccfa3e6b3341d208758c143b906bdfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999c661249a4a1e9ecde97a39b16ffcfaccfa3e6b3341d208758c143b906bdfa", kill_on_drop: false }`
[INFO] [stdout] 999c661249a4a1e9ecde97a39b16ffcfaccfa3e6b3341d208758c143b906bdfa