[INFO] cloning repository https://github.com/roynalnaruto/rs_merkle_tree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/roynalnaruto/rs_merkle_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froynalnaruto%2Frs_merkle_tree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froynalnaruto%2Frs_merkle_tree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 62324ec83f33a6413fa0dead25dcb1d18e6ff2da [INFO] checking roynalnaruto/rs_merkle_tree against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froynalnaruto%2Frs_merkle_tree" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/roynalnaruto/rs_merkle_tree on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/roynalnaruto/rs_merkle_tree [INFO] finished tweaking git repo https://github.com/roynalnaruto/rs_merkle_tree [INFO] tweaked toml for git repo https://github.com/roynalnaruto/rs_merkle_tree written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/roynalnaruto/rs_merkle_tree already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b0b130cdf15245982f3f1722a6b7f53202c614b323973fc5f86e84428c116f68 [INFO] running `Command { std: "docker" "start" "-a" "b0b130cdf15245982f3f1722a6b7f53202c614b323973fc5f86e84428c116f68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b0b130cdf15245982f3f1722a6b7f53202c614b323973fc5f86e84428c116f68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b0b130cdf15245982f3f1722a6b7f53202c614b323973fc5f86e84428c116f68", kill_on_drop: false }` [INFO] [stdout] b0b130cdf15245982f3f1722a6b7f53202c614b323973fc5f86e84428c116f68 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 564d4f00bd7258c2e32de880f9b3ed15603c6bcecc2e97d9aede9b15cfc03b77 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "564d4f00bd7258c2e32de880f9b3ed15603c6bcecc2e97d9aede9b15cfc03b77", kill_on_drop: false }` [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking merkle_tree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct is never constructed: `MerkleTree` [INFO] [stdout] --> src/merkle_tree.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | pub struct MerkleTree [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `root` [INFO] [stdout] --> src/merkle_tree.rs:42:8 [INFO] [stdout] | [INFO] [stdout] 42 | fn root(&self) -> Result<&Node, &'static str> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `count_leaves` [INFO] [stdout] --> src/merkle_tree.rs:49:8 [INFO] [stdout] | [INFO] [stdout] 49 | fn count_leaves(&self) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_leaves` [INFO] [stdout] --> src/merkle_tree.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | fn add_leaves(&mut self, values: &mut Vec) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `from_leaves` [INFO] [stdout] --> src/merkle_tree.rs:89:8 [INFO] [stdout] | [INFO] [stdout] 89 | fn from_leaves(values: &mut Vec, mut hasher: H) -> Result { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `build_parent_nodes` [INFO] [stdout] --> src/merkle_tree.rs:121:8 [INFO] [stdout] | [INFO] [stdout] 121 | fn build_parent_nodes(children: &Vec>, mut hasher: &mut H) -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `as_leaf` [INFO] [stdout] --> src/merkle_tree.rs:140:8 [INFO] [stdout] | [INFO] [stdout] 140 | fn as_leaf(v: &T, hasher: &mut H) -> Node { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `as_internal` [INFO] [stdout] --> src/merkle_tree.rs:153:8 [INFO] [stdout] | [INFO] [stdout] 153 | fn as_internal(left: &Node, right: &Node, hasher: &mut H) -> Node { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 9.14s [INFO] running `Command { std: "docker" "inspect" "564d4f00bd7258c2e32de880f9b3ed15603c6bcecc2e97d9aede9b15cfc03b77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "564d4f00bd7258c2e32de880f9b3ed15603c6bcecc2e97d9aede9b15cfc03b77", kill_on_drop: false }` [INFO] [stdout] 564d4f00bd7258c2e32de880f9b3ed15603c6bcecc2e97d9aede9b15cfc03b77