[INFO] cloning repository https://github.com/yonyu/algorithms_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yonyu/algorithms_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyonyu%2Falgorithms_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyonyu%2Falgorithms_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 245e92771cbd946bfc0fa159b78afd228f5c88b2 [INFO] checking yonyu/algorithms_rust against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyonyu%2Falgorithms_rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/yonyu/algorithms_rust [INFO] finished tweaking git repo https://github.com/yonyu/algorithms_rust [INFO] tweaked toml for git repo https://github.com/yonyu/algorithms_rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/yonyu/algorithms_rust on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/yonyu/algorithms_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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6df41fbeecf99e8d3e6de029cddfe3ecd12702fdd1119c7fed4514b6c68557de [INFO] running `Command { std: "docker" "start" "-a" "6df41fbeecf99e8d3e6de029cddfe3ecd12702fdd1119c7fed4514b6c68557de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6df41fbeecf99e8d3e6de029cddfe3ecd12702fdd1119c7fed4514b6c68557de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6df41fbeecf99e8d3e6de029cddfe3ecd12702fdd1119c7fed4514b6c68557de", kill_on_drop: false }` [INFO] [stdout] 6df41fbeecf99e8d3e6de029cddfe3ecd12702fdd1119c7fed4514b6c68557de [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1ee3bb799002669f1cfbb3f16df3d237a5ccf61506ea76428fcf30ee4db10e9c [INFO] running `Command { std: "docker" "start" "-a" "1ee3bb799002669f1cfbb3f16df3d237a5ccf61506ea76428fcf30ee4db10e9c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.155 [INFO] [stderr] Compiling serde v1.0.203 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Compiling serde_json v1.0.117 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Checking getrandom v0.2.15 [INFO] [stderr] Checking num-bigint v0.4.6 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking regex v1.10.6 [INFO] [stderr] Checking algorithms_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around closure body [INFO] [stdout] --> src/lists/names_scores.rs:61:26 [INFO] [stdout] | [INFO] [stdout] 61 | name.chars().map(|c| (c as u32 - 'A' as u32 + 1)).sum() [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 61 - name.chars().map(|c| (c as u32 - 'A' as u32 + 1)).sum() [INFO] [stdout] 61 + name.chars().map(|c| c as u32 - 'A' as u32 + 1).sum() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around closure body [INFO] [stdout] --> src/lists/names_scores.rs:61:26 [INFO] [stdout] | [INFO] [stdout] 61 | name.chars().map(|c| (c as u32 - 'A' as u32 + 1)).sum() [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 61 - name.chars().map(|c| (c as u32 - 'A' as u32 + 1)).sum() [INFO] [stdout] 61 + name.chars().map(|c| c as u32 - 'A' as u32 + 1).sum() [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: struct `TreeIter` is never constructed [INFO] [stdout] --> src/trees/binary_tree2.rs:30:12 [INFO] [stdout] | [INFO] [stdout] 30 | pub struct TreeIter [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it [INFO] [stdout] = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/trees/binary_tree.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | fn iter(&self) -> TreeIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 37 | fn iter(&self) -> TreeIter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `algorithms_rust` (lib) due to 1 previous error; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/trees/binary_tree.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | fn iter(&self) -> TreeIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 37 | fn iter(&self) -> TreeIter<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "1ee3bb799002669f1cfbb3f16df3d237a5ccf61506ea76428fcf30ee4db10e9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1ee3bb799002669f1cfbb3f16df3d237a5ccf61506ea76428fcf30ee4db10e9c", kill_on_drop: false }` [INFO] [stdout] 1ee3bb799002669f1cfbb3f16df3d237a5ccf61506ea76428fcf30ee4db10e9c