[INFO] cloning repository https://github.com/JoseMariaAlvarez/data_structures_in_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoseMariaAlvarez/data_structures_in_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoseMariaAlvarez%2Fdata_structures_in_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoseMariaAlvarez%2Fdata_structures_in_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 50e52208cc7487d91c281512ea9f70e8ebcf01cd [INFO] checking JoseMariaAlvarez/data_structures_in_rust against try#26ad8a85dc4eed299af809e52f278da81e284602 for pr-138458 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoseMariaAlvarez%2Fdata_structures_in_rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JoseMariaAlvarez/data_structures_in_rust on toolchain 26ad8a85dc4eed299af809e52f278da81e284602 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JoseMariaAlvarez/data_structures_in_rust [INFO] finished tweaking git repo https://github.com/JoseMariaAlvarez/data_structures_in_rust [INFO] tweaked toml for git repo https://github.com/JoseMariaAlvarez/data_structures_in_rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/JoseMariaAlvarez/data_structures_in_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" "+26ad8a85dc4eed299af809e52f278da81e284602" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking JoseMariaAlvarez/data_structures_in_rust against try#26ad8a85dc4eed299af809e52f278da81e284602 for pr-138458 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoseMariaAlvarez%2Fdata_structures_in_rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JoseMariaAlvarez/data_structures_in_rust on toolchain 26ad8a85dc4eed299af809e52f278da81e284602 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JoseMariaAlvarez/data_structures_in_rust [INFO] finished tweaking git repo https://github.com/JoseMariaAlvarez/data_structures_in_rust [INFO] tweaked toml for git repo https://github.com/JoseMariaAlvarez/data_structures_in_rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/JoseMariaAlvarez/data_structures_in_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" "+26ad8a85dc4eed299af809e52f278da81e284602" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d3004a1078940bab92a962f4cc936460798149603b611d431a3d5018405c785c [INFO] running `Command { std: "docker" "start" "-a" "d3004a1078940bab92a962f4cc936460798149603b611d431a3d5018405c785c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d3004a1078940bab92a962f4cc936460798149603b611d431a3d5018405c785c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d3004a1078940bab92a962f4cc936460798149603b611d431a3d5018405c785c", kill_on_drop: false }` [INFO] [stdout] d3004a1078940bab92a962f4cc936460798149603b611d431a3d5018405c785c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+26ad8a85dc4eed299af809e52f278da81e284602" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 669379f6169ee9c978d9fcc22e43c6117bc96596ec2d239b1676193ea0c65dc8 [INFO] running `Command { std: "docker" "start" "-a" "669379f6169ee9c978d9fcc22e43c6117bc96596ec2d239b1676193ea0c65dc8", kill_on_drop: false }` [INFO] [stderr] Checking data_structures_in_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `node` [INFO] [stdout] --> src/binary_search_tree.rs:82:26 [INFO] [stdout] | [INFO] [stdout] 82 | Some(ref mut node) => { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_node` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `modifyHeadElement` should have a snake case name [INFO] [stdout] --> src/array_queue_box.rs:69:12 [INFO] [stdout] | [INFO] [stdout] 69 | pub fn modifyHeadElement(&mut self, value: &'a mut T) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `modify_head_element` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `node` [INFO] [stdout] --> src/binary_search_tree.rs:82:26 [INFO] [stdout] | [INFO] [stdout] 82 | Some(ref mut node) => { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_node` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `modifyHeadElement` should have a snake case name [INFO] [stdout] --> src/array_queue_box.rs:69:12 [INFO] [stdout] | [INFO] [stdout] 69 | pub fn modifyHeadElement(&mut self, value: &'a mut T) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `modify_head_element` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x`, `y`, and `z` are never read [INFO] [stdout] --> src/bin/main_array_queue_box_option.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Triplet { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 5 | x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 6 | y: i32, [INFO] [stdout] | ^ [INFO] [stdout] 7 | z: String [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Triplet` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_z` is never used [INFO] [stdout] --> src/bin/main_array_queue_box_option.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 10 | impl Triplet { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 15 | fn set_z(&mut self, z: String) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/bin/main_array_queue_box.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Triplet { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 5 | x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 6 | y: i32, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Triplet` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `list_sum_recursive` is never used [INFO] [stdout] --> src/bin/main_cons_list.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn list_sum_recursive(list: &List) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `list_sum` is never used [INFO] [stdout] --> src/bin/main_cons_list.rs:10:4 [INFO] [stdout] | [INFO] [stdout] 10 | fn list_sum(list: &List) -> i32 { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/bin/main_array_queue_generic.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Pair { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 5 | x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 6 | y: i32 [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Pair` has derived impls for the traits `Default`, `Clone`, and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `a_q` is never read [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | let mut a_q: List = List{ head : None}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `trip` [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let trip = a_q.pop(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_trip` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `trip` [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let trip =a_q.pop(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_trip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `trip` [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | let trip =a_q.pop(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_trip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x`, `y`, and `z` are never read [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 5 | struct Triplet { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 6 | x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 7 | y: i32, [INFO] [stdout] | ^ [INFO] [stdout] 8 | z: String [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Triplet` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_z` is never used [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 11 | impl Triplet { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 16 | fn set_z(&mut self, z: String) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/bin/main_array_queue_box.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Triplet { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 5 | x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 6 | y: i32, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Triplet` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/bin/main_array_queue_generic.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Pair { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 5 | x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 6 | y: i32 [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Pair` has derived impls for the traits `Default`, `Clone`, and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `a_q` is never read [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | let mut a_q: List = List{ head : None}; [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `trip` [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | let trip = a_q.pop(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_trip` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `trip` [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let trip =a_q.pop(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_trip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `trip` [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | let trip =a_q.pop(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_trip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x`, `y`, and `z` are never read [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 5 | struct Triplet { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 6 | x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 7 | y: i32, [INFO] [stdout] | ^ [INFO] [stdout] 8 | z: String [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Triplet` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_z` is never used [INFO] [stdout] --> src/bin/main_ok_stack_generic.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 11 | impl Triplet { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 16 | fn set_z(&mut self, z: String) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x`, `y`, and `z` are never read [INFO] [stdout] --> src/bin/main_array_queue_box_option.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Triplet { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 5 | x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 6 | y: i32, [INFO] [stdout] | ^ [INFO] [stdout] 7 | z: String [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Triplet` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `set_z` is never used [INFO] [stdout] --> src/bin/main_array_queue_box_option.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 10 | impl Triplet { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 15 | fn set_z(&mut self, z: String) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s [INFO] running `Command { std: "docker" "inspect" "669379f6169ee9c978d9fcc22e43c6117bc96596ec2d239b1676193ea0c65dc8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "669379f6169ee9c978d9fcc22e43c6117bc96596ec2d239b1676193ea0c65dc8", kill_on_drop: false }` [INFO] [stdout] 669379f6169ee9c978d9fcc22e43c6117bc96596ec2d239b1676193ea0c65dc8