[INFO] cloning repository https://github.com/kylehz/datastruct-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kylehz/datastruct-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkylehz%2Fdatastruct-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkylehz%2Fdatastruct-rs'... [INFO] [stderr] error: copy-fd: write returned: No space left on device [INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/pre-receive.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkylehz%2Fdatastruct-rs/hooks/pre-receive.sample': No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 1) [INFO] cloning repository https://github.com/kylehz/datastruct-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kylehz/datastruct-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkylehz%2Fdatastruct-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkylehz%2Fdatastruct-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a3f3651406dca899435da60d92024842face5a92 [INFO] checking kylehz/datastruct-rs against master#4847d6a9d07d4be9ba3196f6ad444af2d7bdde72 for pr-134272 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkylehz%2Fdatastruct-rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kylehz/datastruct-rs on toolchain 4847d6a9d07d4be9ba3196f6ad444af2d7bdde72 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kylehz/datastruct-rs [INFO] finished tweaking git repo https://github.com/kylehz/datastruct-rs [INFO] tweaked toml for git repo https://github.com/kylehz/datastruct-rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/kylehz/datastruct-rs 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" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7c4b5f1187e98ae3408c0ba44f67302d9c86a49888d7398b2e6f7ae2ab976df5 [INFO] running `Command { std: "docker" "start" "-a" "7c4b5f1187e98ae3408c0ba44f67302d9c86a49888d7398b2e6f7ae2ab976df5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7c4b5f1187e98ae3408c0ba44f67302d9c86a49888d7398b2e6f7ae2ab976df5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7c4b5f1187e98ae3408c0ba44f67302d9c86a49888d7398b2e6f7ae2ab976df5", kill_on_drop: false }` [INFO] [stdout] 7c4b5f1187e98ae3408c0ba44f67302d9c86a49888d7398b2e6f7ae2ab976df5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 799a60233fcfd2acec3ee890d34e66ccb65dbcf1f9160b27ff75364f1b9d1eb2 [INFO] running `Command { std: "docker" "start" "-a" "799a60233fcfd2acec3ee890d34e66ccb65dbcf1f9160b27ff75364f1b9d1eb2", kill_on_drop: false }` [INFO] [stderr] Checking datastruct-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/linked_list.rs:40:13 [INFO] [stdout] | [INFO] [stdout] 40 | let mut node = Node::new(elem); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/linked_list.rs:75:13 [INFO] [stdout] | [INFO] [stdout] 75 | let mut node = Node::new(elem); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/vec_deque.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | for i in 0..additional { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `val`, `left`, and `right` are never read [INFO] [stdout] --> src/binary_search_tree.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 5 | val: T, [INFO] [stdout] | ^^^ [INFO] [stdout] 6 | left: Option>>, [INFO] [stdout] | ^^^^ [INFO] [stdout] 7 | right: Option>>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `BinaryTree` is never used [INFO] [stdout] --> src/binary_search_tree.rs:10:7 [INFO] [stdout] | [INFO] [stdout] 10 | trait BinaryTree { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `BinarySearchTree` is never used [INFO] [stdout] --> src/binary_search_tree.rs:16:7 [INFO] [stdout] | [INFO] [stdout] 16 | trait BinarySearchTree: BinaryTree [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `len` is never read [INFO] [stdout] --> src/linked_list.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct List { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 12 | len: usize, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/linked_list.rs:40:13 [INFO] [stdout] | [INFO] [stdout] 40 | let mut node = Node::new(elem); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/linked_list.rs:75:13 [INFO] [stdout] | [INFO] [stdout] 75 | let mut node = Node::new(elem); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/vec_deque.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | for i in 0..additional { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `len` is never read [INFO] [stdout] --> src/linked_list.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 9 | pub struct List { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 12 | len: usize, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s [INFO] running `Command { std: "docker" "inspect" "799a60233fcfd2acec3ee890d34e66ccb65dbcf1f9160b27ff75364f1b9d1eb2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "799a60233fcfd2acec3ee890d34e66ccb65dbcf1f9160b27ff75364f1b9d1eb2", kill_on_drop: false }` [INFO] [stdout] 799a60233fcfd2acec3ee890d34e66ccb65dbcf1f9160b27ff75364f1b9d1eb2