[INFO] cloning repository https://github.com/Elianagam/blockchain [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Elianagam/blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElianagam%2Fblockchain", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElianagam%2Fblockchain'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 16af333f91d0a37dd8dadccd24e67988e3394ae6 [INFO] checking Elianagam/blockchain against 5c543b0b8c73c7b72bc8284ced4fb22ead15734d for pr-160186 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElianagam%2Fblockchain" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Elianagam/blockchain [INFO] finished tweaking git repo https://github.com/Elianagam/blockchain [INFO] tweaked toml for git repo https://github.com/Elianagam/blockchain written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Elianagam/blockchain on toolchain 5c543b0b8c73c7b72bc8284ced4fb22ead15734d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Elianagam/blockchain 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" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded typenum v1.13.0 [INFO] [stderr] Downloaded version_check v0.9.3 [INFO] [stderr] Downloaded blake2 v0.9.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] 82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f [INFO] running `Command { std: "docker" "start" "82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling typenum v1.13.0 [INFO] [stderr] Checking subtle v2.4.1 [INFO] [stderr] Checking opaque-debug v0.3.0 [INFO] [stderr] Checking std-semaphore v0.1.0 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Checking crypto-mac v0.8.0 [INFO] [stderr] Checking digest v0.9.0 [INFO] [stderr] Checking blake2 v0.9.1 [INFO] [stderr] Checking blockchain v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `pending_records` is never read [INFO] [stdout] --> src/blockchain/blockchain.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 13 | pub struct Blockchain { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 21 | pending_records: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Blockchain` has derived impls for the traits `Clone` and `Debug`, but these are 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: methods `get_student_ids`, `get_student_by_id_mut`, and `get_student_by_id` are never used [INFO] [stdout] --> src/blockchain/world_state.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait WorldState { [INFO] [stdout] | ---------- methods in this trait [INFO] [stdout] 6 | /// Returns all registered student ids [INFO] [stdout] 7 | fn get_student_ids(&self) -> Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 10 | fn get_student_by_id_mut(&mut self, id: &String) -> Option<&mut Student>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 13 | fn get_student_by_id(&self, id: &String) -> Option<&Student>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/encoder.rs:7:39 [INFO] [stdout] | [INFO] [stdout] 7 | let mut message = String::from(msg.clone()); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `pending_records` is never read [INFO] [stdout] --> src/blockchain/blockchain.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 13 | pub struct Blockchain { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 21 | pending_records: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Blockchain` has derived impls for the traits `Clone` and `Debug`, but these are 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: methods `get_student_ids`, `get_student_by_id_mut`, and `get_student_by_id` are never used [INFO] [stdout] --> src/blockchain/world_state.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait WorldState { [INFO] [stdout] | ---------- methods in this trait [INFO] [stdout] 6 | /// Returns all registered student ids [INFO] [stdout] 7 | fn get_student_ids(&self) -> Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 10 | fn get_student_by_id_mut(&mut self, id: &String) -> Option<&mut Student>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 13 | fn get_student_by_id(&self, id: &String) -> Option<&Student>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/encoder.rs:7:39 [INFO] [stdout] | [INFO] [stdout] 7 | let mut message = String::from(msg.clone()); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.37s [INFO] running `Command { std: "docker" "inspect" "82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f", kill_on_drop: false }` [INFO] [stdout] 82246ad97a1797a9b317779620c9115863ee04a3180aaa87f62c87f69206729f