[INFO] cloning repository https://github.com/tommy725/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/tommy725/learning-systems-programming-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftommy725%2Flearning-systems-programming-in-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftommy725%2Flearning-systems-programming-in-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ac1eab723f744319f9dbc259652b6f2349e0a88f [INFO] checking tommy725/learning-systems-programming-in-rust against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftommy725%2Flearning-systems-programming-in-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain [INFO] started tweaking git repo https://github.com/tommy725/learning-systems-programming-in-rust [INFO] finished tweaking git repo https://github.com/tommy725/learning-systems-programming-in-rust [INFO] tweaked toml for git repo https://github.com/tommy725/learning-systems-programming-in-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/tommy725/learning-systems-programming-in-rust on toolchain b1f2594eac607c1f051534800237eeedb5590a49 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/tommy725/learning-systems-programming-in-rust 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f31acc270ac2ddfefc071e47dce118fd0d591fb2a5a4b8c049fde30364af394b [INFO] running `Command { std: "docker" "start" "-a" "f31acc270ac2ddfefc071e47dce118fd0d591fb2a5a4b8c049fde30364af394b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f31acc270ac2ddfefc071e47dce118fd0d591fb2a5a4b8c049fde30364af394b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f31acc270ac2ddfefc071e47dce118fd0d591fb2a5a4b8c049fde30364af394b", kill_on_drop: false }` [INFO] [stdout] f31acc270ac2ddfefc071e47dce118fd0d591fb2a5a4b8c049fde30364af394b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9eddd5122a909194fc78df75978780cec607fe7e2b4da64935d2e37c7cf749c1 [INFO] running `Command { std: "docker" "start" "-a" "9eddd5122a909194fc78df75978780cec607fe7e2b4da64935d2e37c7cf749c1", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.95 [INFO] [stderr] Compiling anyhow v1.0.40 [INFO] [stderr] Compiling bzip2-sys v0.1.10+1.0.8 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Checking lib v0.1.0 (/opt/rustwide/workdir/lib) [INFO] [stderr] Compiling sysinfo v0.18.1 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Compiling tokio v1.6.0 [INFO] [stderr] Checking chapter9 v0.1.0 (/opt/rustwide/workdir/chapter9) [INFO] [stderr] Checking chapter6 v0.1.0 (/opt/rustwide/workdir/chapter6) [INFO] [stderr] Checking chapter17 v0.1.0 (/opt/rustwide/workdir/chapter17) [INFO] [stderr] Checking chapter13 v0.1.0 (/opt/rustwide/workdir/chapter13) [INFO] [stderr] Checking chapter14 v0.1.0 (/opt/rustwide/workdir/chapter14) [INFO] [stderr] Checking chapter12 v0.1.0 (/opt/rustwide/workdir/chapter12) [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking chapter5 v0.1.0 (/opt/rustwide/workdir/chapter5) [INFO] [stderr] Checking chapter1 v0.1.0 (/opt/rustwide/workdir/chapter1) [INFO] [stderr] Checking chapter15 v0.1.0 (/opt/rustwide/workdir/chapter15) [INFO] [stderr] Checking chapter16 v0.1.0 (/opt/rustwide/workdir/chapter16) [INFO] [stderr] Checking appendix v0.1.0 (/opt/rustwide/workdir/appendix) [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Checking chapter8 v0.1.0 (/opt/rustwide/workdir/chapter8) [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking flate2 v1.0.20 [INFO] [stderr] Checking getrandom v0.2.2 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking nix v0.21.0 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking signal-hook-registry v1.3.0 [INFO] [stderr] Checking mio v0.7.11 [INFO] [stderr] Checking net2 v0.2.37 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking inotify-sys v0.1.5 [INFO] [stderr] Checking filetime v0.2.14 [INFO] [stderr] Checking memmap2 v0.2.2 [INFO] [stderr] Checking bzip2 v0.3.3 [INFO] [stderr] Checking rayon-core v1.9.1 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking nix v0.20.0 [INFO] [stderr] Checking inotify v0.7.1 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking rayon v1.5.1 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking notify v4.0.17 [INFO] [stderr] Checking chapter7 v0.1.0 (/opt/rustwide/workdir/chapter7) [INFO] [stderr] Checking serde_json v1.0.64 [INFO] [stderr] Compiling thiserror-impl v1.0.24 [INFO] [stderr] Compiling tokio-macros v1.2.0 [INFO] [stderr] Checking chapter2 v0.1.0 (/opt/rustwide/workdir/chapter2) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter2/src/2_4_3/main.rs:6:13 [INFO] [stdout] | [INFO] [stdout] 6 | IoError(std::io::Error), [INFO] [stdout] | ------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `BufferError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 6 - IoError(std::io::Error), [INFO] [stdout] 6 + IoError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter2/src/2_4_3/main.rs:7:14 [INFO] [stdout] | [INFO] [stdout] 7 | StrError(str::Utf8Error), [INFO] [stdout] | -------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `BufferError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 7 - StrError(str::Utf8Error), [INFO] [stdout] 7 + StrError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter2/src/2_4_3/main.rs:6:13 [INFO] [stdout] | [INFO] [stdout] 6 | IoError(std::io::Error), [INFO] [stdout] | ------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `BufferError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 6 - IoError(std::io::Error), [INFO] [stdout] 6 + IoError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter2/src/2_4_3/main.rs:7:14 [INFO] [stdout] | [INFO] [stdout] 7 | StrError(str::Utf8Error), [INFO] [stdout] | -------- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `BufferError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 7 - StrError(str::Utf8Error), [INFO] [stdout] 7 + StrError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking thiserror v1.0.24 [INFO] [stderr] Checking zip v0.5.12 [INFO] [stderr] Checking chapter11 v0.1.0 (/opt/rustwide/workdir/chapter11) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> chapter11/src/11_8/main.rs:32:82 [INFO] [stdout] | [INFO] [stdout] 32 | execve(&dir, &[dir.clone(), arg], &[env]).expect("execution failed."); [INFO] [stdout] | ---------------------------------------------------------------------^ unreachable expression [INFO] [stdout] | | [INFO] [stdout] | any code following this expression is unreachable [INFO] [stdout] | [INFO] [stdout] note: this expression has type `Infallible`, which is uninhabited [INFO] [stdout] --> chapter11/src/11_8/main.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 32 | execve(&dir, &[dir.clone(), arg], &[env]).expect("execution failed."); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> chapter11/src/11_8/main.rs:32:82 [INFO] [stdout] | [INFO] [stdout] 32 | execve(&dir, &[dir.clone(), arg], &[env]).expect("execution failed."); [INFO] [stdout] | ---------------------------------------------------------------------^ unreachable expression [INFO] [stdout] | | [INFO] [stdout] | any code following this expression is unreachable [INFO] [stdout] | [INFO] [stdout] note: this expression has type `Infallible`, which is uninhabited [INFO] [stdout] --> chapter11/src/11_8/main.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 32 | execve(&dir, &[dir.clone(), arg], &[env]).expect("execution failed."); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter3 v0.1.0 (/opt/rustwide/workdir/chapter3) [INFO] [stderr] Checking chapter10 v0.1.0 (/opt/rustwide/workdir/chapter10) [INFO] [stdout] warning: fields `name` and `value` are never read [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct HeaderOwn { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 8 | name: String, [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] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `value` are never read [INFO] [stdout] --> chapter3/src/3_4_3/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct HeaderOwn { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 8 | name: String, [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] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter4 v0.1.0 (/opt/rustwide/workdir/chapter4) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.36s [INFO] running `Command { std: "docker" "inspect" "9eddd5122a909194fc78df75978780cec607fe7e2b4da64935d2e37c7cf749c1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9eddd5122a909194fc78df75978780cec607fe7e2b4da64935d2e37c7cf749c1", kill_on_drop: false }` [INFO] [stdout] 9eddd5122a909194fc78df75978780cec607fe7e2b4da64935d2e37c7cf749c1