[INFO] cloning repository https://github.com/rohit7648/Practice-Rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rohit7648/Practice-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frohit7648%2FPractice-Rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frohit7648%2FPractice-Rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 85f180a0841ff5f4411ecd4d4f42d0e66ce67c0a [INFO] checking rohit7648/Practice-Rust against try#f3d95de532264a1215023baa665c0028aecf74b1 for pr-148477 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frohit7648%2FPractice-Rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/rohit7648/Practice-Rust [INFO] finished tweaking git repo https://github.com/rohit7648/Practice-Rust [INFO] tweaked toml for git repo https://github.com/rohit7648/Practice-Rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/rohit7648/Practice-Rust on toolchain f3d95de532264a1215023baa665c0028aecf74b1 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/rohit7648/Practice-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" "+f3d95de532264a1215023baa665c0028aecf74b1" "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 rohit7648/Practice-Rust against try#f3d95de532264a1215023baa665c0028aecf74b1 for pr-148477 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frohit7648%2FPractice-Rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/rohit7648/Practice-Rust [INFO] finished tweaking git repo https://github.com/rohit7648/Practice-Rust [INFO] tweaked toml for git repo https://github.com/rohit7648/Practice-Rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/rohit7648/Practice-Rust on toolchain f3d95de532264a1215023baa665c0028aecf74b1 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/rohit7648/Practice-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" "+f3d95de532264a1215023baa665c0028aecf74b1" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c16c04d670f04d050751a9c741109d0e499a03cd0ee2a90c03e05be1ae517b69 [INFO] running `Command { std: "docker" "start" "-a" "c16c04d670f04d050751a9c741109d0e499a03cd0ee2a90c03e05be1ae517b69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c16c04d670f04d050751a9c741109d0e499a03cd0ee2a90c03e05be1ae517b69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c16c04d670f04d050751a9c741109d0e499a03cd0ee2a90c03e05be1ae517b69", kill_on_drop: false }` [INFO] [stdout] c16c04d670f04d050751a9c741109d0e499a03cd0ee2a90c03e05be1ae517b69 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3143bdace1c5762a010008152142c33014e75061e009b93c714cd55955afbe2d [INFO] running `Command { std: "docker" "start" "-a" "3143bdace1c5762a010008152142c33014e75061e009b93c714cd55955afbe2d", kill_on_drop: false }` [INFO] [stderr] Checking helloworl v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> src/practice/var.rs:5:17 [INFO] [stdout] | [INFO] [stdout] 5 | let mut b = 10; // It's mutable [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> src/practice/var.rs:5:17 [INFO] [stdout] | [INFO] [stdout] 5 | let mut b = 10; // It's mutable [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `tup_dec` is assigned to, but never used [INFO] [stdout] --> src/practice/data_types.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let tup_dec: (i32,i32,i32); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_tup_dec` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tup_dec` is never read [INFO] [stdout] --> src/practice/data_types.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | tup_dec = (1,2,3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `tup_dec` is assigned to, but never used [INFO] [stdout] --> src/practice/data_types.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let tup_dec: (i32,i32,i32); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_tup_dec` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tup_dec` is never read [INFO] [stdout] --> src/practice/data_types.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | tup_dec = (1,2,3); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/practice/ownership.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let mut y = x.clone(); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/practice/ownership.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let mut y = x.clone(); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `declare_variable` is never used [INFO] [stdout] --> src/practice/var.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn declare_variable() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `declare_variable` is never used [INFO] [stdout] --> src/practice/var.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn declare_variable() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `without_param` is never used [INFO] [stdout] --> src/practice/function.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn without_param() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `without_param` is never used [INFO] [stdout] --> src/practice/function.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn without_param() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `single_param` is never used [INFO] [stdout] --> src/practice/function.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn single_param(a: i32) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `single_param` is never used [INFO] [stdout] --> src/practice/function.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn single_param(a: i32) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `two_param` is never used [INFO] [stdout] --> src/practice/function.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn two_param(a:i32, b:char) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `two_param` is never used [INFO] [stdout] --> src/practice/function.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn two_param(a:i32, b:char) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `sum` is never used [INFO] [stdout] --> src/practice/function.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn sum(p0: i32, p1: i32) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `sum` is never used [INFO] [stdout] --> src/practice/function.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn sum(p0: i32, p1: i32) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `sum_internal` is never used [INFO] [stdout] --> src/practice/function.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn sum_internal(p0: i32, p1: i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `all_data_types` is never used [INFO] [stdout] --> src/practice/data_types.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn all_data_types() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `sum_internal` is never used [INFO] [stdout] --> src/practice/function.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn sum_internal(p0: i32, p1: i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `if_else` is never used [INFO] [stdout] --> src/practice/if_else.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn if_else() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `all_data_types` is never used [INFO] [stdout] --> src/practice/data_types.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn all_data_types() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ownership_10` is never used [INFO] [stdout] --> src/practice/ownership.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn ownership_10() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `give_ownership_1` is never used [INFO] [stdout] --> src/practice/ownership.rs:95:4 [INFO] [stdout] | [INFO] [stdout] 95 | fn give_ownership_1() -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `if_else` is never used [INFO] [stdout] --> src/practice/if_else.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn if_else() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `give_ownership_2` is never used [INFO] [stdout] --> src/practice/ownership.rs:103:4 [INFO] [stdout] | [INFO] [stdout] 103 | fn give_ownership_2() -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ownership_10` is never used [INFO] [stdout] --> src/practice/ownership.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn ownership_10() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `give_ownership_1` is never used [INFO] [stdout] --> src/practice/ownership.rs:95:4 [INFO] [stdout] | [INFO] [stdout] 95 | fn give_ownership_1() -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `give_ownership_2` is never used [INFO] [stdout] --> src/practice/ownership.rs:103:4 [INFO] [stdout] | [INFO] [stdout] 103 | fn give_ownership_2() -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s [INFO] running `Command { std: "docker" "inspect" "3143bdace1c5762a010008152142c33014e75061e009b93c714cd55955afbe2d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3143bdace1c5762a010008152142c33014e75061e009b93c714cd55955afbe2d", kill_on_drop: false }` [INFO] [stdout] 3143bdace1c5762a010008152142c33014e75061e009b93c714cd55955afbe2d