[INFO] cloning repository https://github.com/SiraKen/learn-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SiraKen/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiraKen%2Flearn-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiraKen%2Flearn-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d8f1c075d6e62483b876715f4e0b29425b7ebaae [INFO] building SiraKen/learn-rust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiraKen%2Flearn-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/SiraKen/learn-rust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/SiraKen/learn-rust [INFO] finished tweaking git repo https://github.com/SiraKen/learn-rust [INFO] tweaked toml for git repo https://github.com/SiraKen/learn-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/SiraKen/learn-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c50d82e3e211350f0965dab4fbcf71c0b0449b5405ded21a59bd916df2c02a52 [INFO] running `Command { std: "docker" "start" "-a" "c50d82e3e211350f0965dab4fbcf71c0b0449b5405ded21a59bd916df2c02a52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c50d82e3e211350f0965dab4fbcf71c0b0449b5405ded21a59bd916df2c02a52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c50d82e3e211350f0965dab4fbcf71c0b0449b5405ded21a59bd916df2c02a52", kill_on_drop: false }` [INFO] [stdout] c50d82e3e211350f0965dab4fbcf71c0b0449b5405ded21a59bd916df2c02a52 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6f80f152c6e67db37a19eb585d6c127d69b007b373990388daceb8443838b5cb [INFO] running `Command { std: "docker" "start" "-a" "6f80f152c6e67db37a19eb585d6c127d69b007b373990388daceb8443838b5cb", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.125 [INFO] [stderr] Compiling ppv-lite86 v0.2.16 [INFO] [stderr] Compiling getrandom v0.2.6 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling learn_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `spaces` [INFO] [stdout] --> src/chapter3.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let spaces = spaces.len(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `guess` [INFO] [stdout] --> src/chapter3.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let guess: u32 = "42".parse().expect("Not a number!"); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_guess` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/chapter4.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let b = a; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `email` and `active` are never read [INFO] [stdout] --> src/chapter5.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 5 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 8 | email: String, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 9 | active: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/chapter5.rs:22:14 [INFO] [stdout] | [INFO] [stdout] 22 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `is_black` and `is_white` are never used [INFO] [stdout] --> src/chapter5.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 24 | impl Color { [INFO] [stdout] | ---------- methods in this implementation [INFO] [stdout] 25 | fn is_black(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn is_white(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.79s [INFO] running `Command { std: "docker" "inspect" "6f80f152c6e67db37a19eb585d6c127d69b007b373990388daceb8443838b5cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f80f152c6e67db37a19eb585d6c127d69b007b373990388daceb8443838b5cb", kill_on_drop: false }` [INFO] [stdout] 6f80f152c6e67db37a19eb585d6c127d69b007b373990388daceb8443838b5cb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5ebcc70d1608f84232bde38522de7b6ab08b61e3f43990a49697cd65028de6ba [INFO] running `Command { std: "docker" "start" "-a" "5ebcc70d1608f84232bde38522de7b6ab08b61e3f43990a49697cd65028de6ba", kill_on_drop: false }` [INFO] [stderr] Compiling learn_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `spaces` [INFO] [stdout] --> src/chapter3.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let spaces = spaces.len(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `guess` [INFO] [stdout] --> src/chapter3.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let guess: u32 = "42".parse().expect("Not a number!"); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_guess` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/chapter4.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let b = a; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `email` and `active` are never read [INFO] [stdout] --> src/chapter5.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 5 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 8 | email: String, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 9 | active: bool, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s [INFO] running `Command { std: "docker" "inspect" "5ebcc70d1608f84232bde38522de7b6ab08b61e3f43990a49697cd65028de6ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5ebcc70d1608f84232bde38522de7b6ab08b61e3f43990a49697cd65028de6ba", kill_on_drop: false }` [INFO] [stdout] 5ebcc70d1608f84232bde38522de7b6ab08b61e3f43990a49697cd65028de6ba