[INFO] fetching crate d2_iterators_in_rust 0.1.0... [INFO] checking d2_iterators_in_rust-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170 [INFO] extracting crate d2_iterators_in_rust 0.1.0 into /workspace/builds/worker-5-tc1/source [INFO] started tweaking crates.io crate d2_iterators_in_rust 0.1.0 [INFO] finished tweaking crates.io crate d2_iterators_in_rust 0.1.0 [INFO] tweaked toml for crates.io crate d2_iterators_in_rust 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate d2_iterators_in_rust 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate d2_iterators_in_rust 0.1.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0c1b981609a580b2ea587e91dde427e4587dd64fe5f5ec3f78e9fae385143b78 [INFO] running `Command { std: "docker" "start" "-a" "0c1b981609a580b2ea587e91dde427e4587dd64fe5f5ec3f78e9fae385143b78", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0c1b981609a580b2ea587e91dde427e4587dd64fe5f5ec3f78e9fae385143b78", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0c1b981609a580b2ea587e91dde427e4587dd64fe5f5ec3f78e9fae385143b78", kill_on_drop: false }` [INFO] [stdout] 0c1b981609a580b2ea587e91dde427e4587dd64fe5f5ec3f78e9fae385143b78 [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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bd6cc58d7e79abbeb0fc1882a7afc1e656aab57eb370afb1bedc64d7e02c25ea [INFO] running `Command { std: "docker" "start" "-a" "bd6cc58d7e79abbeb0fc1882a7afc1e656aab57eb370afb1bedc64d7e02c25ea", kill_on_drop: false }` [INFO] [stderr] Checking either v1.9.0 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Checking d2_iterators_in_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `RangeIterator` is never constructed [INFO] [stdout] --> src/gen_range.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | pub struct RangeIterator { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/gen_range.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 7 | impl RangeIterator { [INFO] [stdout] | ------------------ associated function in this implementation [INFO] [stdout] 8 | pub fn new(start: i32, stop: i32, step: i32) -> RangeIterator { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SkipIterator` is never constructed [INFO] [stdout] --> src/combi.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | pub struct SkipIterator { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `IterCombi` is never used [INFO] [stdout] --> src/combi.rs:13:11 [INFO] [stdout] | [INFO] [stdout] 13 | pub trait IterCombi: Iterator + Sized { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: a method with this name may be added to the standard library in the future [INFO] [stdout] --> src/combi.rs:46:41 [INFO] [stdout] | [INFO] [stdout] 46 | let v: Vec<&str> = s.split(" ").intersperse(",").collect(); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse` [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 + #![feature(iter_intersperse)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.41s [INFO] running `Command { std: "docker" "inspect" "bd6cc58d7e79abbeb0fc1882a7afc1e656aab57eb370afb1bedc64d7e02c25ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bd6cc58d7e79abbeb0fc1882a7afc1e656aab57eb370afb1bedc64d7e02c25ea", kill_on_drop: false }` [INFO] [stdout] bd6cc58d7e79abbeb0fc1882a7afc1e656aab57eb370afb1bedc64d7e02c25ea