[INFO] cloning repository https://github.com/j84guo/ece459-a4 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/j84guo/ece459-a4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj84guo%2Fece459-a4", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj84guo%2Fece459-a4'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6e9c8128269301aa41b10d397d197d511b8b8916 [INFO] building j84guo/ece459-a4 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%2Fj84guo%2Fece459-a4" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/j84guo/ece459-a4 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/j84guo/ece459-a4 [INFO] finished tweaking git repo https://github.com/j84guo/ece459-a4 [INFO] tweaked toml for git repo https://github.com/j84guo/ece459-a4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/j84guo/ece459-a4 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0fdf259e20f494da48a29f6d0a71139d840b166824d321806e0b8b1df5cef0d7 [INFO] running `Command { std: "docker" "start" "-a" "0fdf259e20f494da48a29f6d0a71139d840b166824d321806e0b8b1df5cef0d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0fdf259e20f494da48a29f6d0a71139d840b166824d321806e0b8b1df5cef0d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0fdf259e20f494da48a29f6d0a71139d840b166824d321806e0b8b1df5cef0d7", kill_on_drop: false }` [INFO] [stdout] 0fdf259e20f494da48a29f6d0a71139d840b166824d321806e0b8b1df5cef0d7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ee010bfad3611dd40db1e311b37670b3795e325ad24864bb93c7e66ead5dccc3 [INFO] running `Command { std: "docker" "start" "-a" "ee010bfad3611dd40db1e311b37670b3795e325ad24864bb93c7e66ead5dccc3", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling typenum v1.12.0 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling opaque-debug v0.3.0 [INFO] [stderr] Compiling cpuid-bool v0.1.2 [INFO] [stderr] Compiling hex v0.4.2 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.5 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling crossbeam-queue v0.2.3 [INFO] [stderr] Compiling crossbeam-channel v0.4.3 [INFO] [stderr] Compiling crossbeam-deque v0.7.3 [INFO] [stderr] Compiling block-buffer v0.9.0 [INFO] [stderr] Compiling digest v0.9.0 [INFO] [stderr] Compiling crossbeam v0.7.3 [INFO] [stderr] Compiling sha2 v0.9.1 [INFO] [stderr] Compiling lab4 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `super::Event` [INFO] [stdout] --> src/idea.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use super::Event; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::Event` [INFO] [stdout] --> src/package.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use super::Event; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Sender` [INFO] [stdout] --> src/student.rs:4:36 [INFO] [stdout] | [INFO] [stdout] 4 | use crossbeam::channel::{Receiver, Sender}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Event` [INFO] [stdout] --> src/student.rs:6:33 [INFO] [stdout] | [INFO] [stdout] 6 | use super::{checksum::Checksum, Event, idea::Idea, package::Package}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `num_students` and `num_packages` are never read [INFO] [stdout] --> src/idea.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 13 | pub struct IdeaGenerator { [INFO] [stdout] | ------------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 17 | num_students: usize, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 18 | num_packages: usize, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Event` [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | Event, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:160:9 [INFO] [stdout] | [INFO] [stdout] 160 | idea_send.send(None); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 160 | let _ = idea_send.send(None); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.94s [INFO] running `Command { std: "docker" "inspect" "ee010bfad3611dd40db1e311b37670b3795e325ad24864bb93c7e66ead5dccc3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ee010bfad3611dd40db1e311b37670b3795e325ad24864bb93c7e66ead5dccc3", kill_on_drop: false }` [INFO] [stdout] ee010bfad3611dd40db1e311b37670b3795e325ad24864bb93c7e66ead5dccc3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 43bc8c7490d76e5eb464ea202f0b9f62f38a9df7887eb9df543d702a3deccf6f [INFO] running `Command { std: "docker" "start" "-a" "43bc8c7490d76e5eb464ea202f0b9f62f38a9df7887eb9df543d702a3deccf6f", kill_on_drop: false }` [INFO] [stdout] warning: unused import: `super::Event` [INFO] [stdout] --> src/idea.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use super::Event; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::Event` [INFO] [stdout] --> src/package.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use super::Event; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Sender` [INFO] [stdout] --> src/student.rs:4:36 [INFO] [stdout] | [INFO] [stdout] 4 | use crossbeam::channel::{Receiver, Sender}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Event` [INFO] [stdout] --> src/student.rs:6:33 [INFO] [stdout] | [INFO] [stdout] 6 | use super::{checksum::Checksum, Event, idea::Idea, package::Package}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `num_students` and `num_packages` are never read [INFO] [stdout] --> src/idea.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 13 | pub struct IdeaGenerator { [INFO] [stdout] | ------------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 17 | num_students: usize, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 18 | num_packages: usize, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling lab4 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Event` [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | Event, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::Event` [INFO] [stdout] --> src/idea.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use super::Event; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::Event` [INFO] [stdout] --> src/package.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use super::Event; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Sender` [INFO] [stdout] --> src/student.rs:4:36 [INFO] [stdout] | [INFO] [stdout] 4 | use crossbeam::channel::{Receiver, Sender}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Event` [INFO] [stdout] --> src/student.rs:6:33 [INFO] [stdout] | [INFO] [stdout] 6 | use super::{checksum::Checksum, Event, idea::Idea, package::Package}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:160:9 [INFO] [stdout] | [INFO] [stdout] 160 | idea_send.send(None); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 160 | let _ = idea_send.send(None); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `num_students` and `num_packages` are never read [INFO] [stdout] --> src/idea.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 13 | pub struct IdeaGenerator { [INFO] [stdout] | ------------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 17 | num_students: usize, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 18 | num_packages: usize, [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 0.62s [INFO] running `Command { std: "docker" "inspect" "43bc8c7490d76e5eb464ea202f0b9f62f38a9df7887eb9df543d702a3deccf6f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "43bc8c7490d76e5eb464ea202f0b9f62f38a9df7887eb9df543d702a3deccf6f", kill_on_drop: false }` [INFO] [stdout] 43bc8c7490d76e5eb464ea202f0b9f62f38a9df7887eb9df543d702a3deccf6f