[INFO] cloning repository https://github.com/Dari420/multiplication-table-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dari420/multiplication-table-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDari420%2Fmultiplication-table-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDari420%2Fmultiplication-table-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b245b09e88346da1f7c3c8c905a287eb6713c512 [INFO] checking Dari420/multiplication-table-rs against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDari420%2Fmultiplication-table-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Dari420/multiplication-table-rs on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Dari420/multiplication-table-rs [INFO] finished tweaking git repo https://github.com/Dari420/multiplication-table-rs [INFO] tweaked toml for git repo https://github.com/Dari420/multiplication-table-rs written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/Dari420/multiplication-table-rs already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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] 9094ece706c216f1ad6f3b14859e3dc9deb863579c207b20f24e04404cac2c4e [INFO] running `Command { std: "docker" "start" "-a" "9094ece706c216f1ad6f3b14859e3dc9deb863579c207b20f24e04404cac2c4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9094ece706c216f1ad6f3b14859e3dc9deb863579c207b20f24e04404cac2c4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9094ece706c216f1ad6f3b14859e3dc9deb863579c207b20f24e04404cac2c4e", kill_on_drop: false }` [INFO] [stdout] 9094ece706c216f1ad6f3b14859e3dc9deb863579c207b20f24e04404cac2c4e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b02ad11cfe30899d20c0e0011227541750a4040ed1a227e7672fa64b9fa3fbf4 [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" "b02ad11cfe30899d20c0e0011227541750a4040ed1a227e7672fa64b9fa3fbf4", kill_on_drop: false }` [INFO] [stderr] Checking multiplication_tables v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/main.rs:1:22 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io::{stdin, Read}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/main.rs:1:22 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io::{stdin, Read}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:18:17 [INFO] [stdout] | [INFO] [stdout] 18 | let mut f = File::open(path).expect("Unable to open file"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `multiplier_cols` is never read [INFO] [stdout] --> src/main.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | let mut multiplier_cols: isize = 0; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `newline` [INFO] [stdout] --> src/main.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let newline = "\n"; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_newline` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:30:29 [INFO] [stdout] | [INFO] [stdout] 30 | Some(Value::Int(i)) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rows` [INFO] [stdout] --> src/main.rs:31:21 [INFO] [stdout] | [INFO] [stdout] 31 | for rows in 0isize..c_limit.parse().unwrap() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `columns` [INFO] [stdout] --> src/main.rs:34:25 [INFO] [stdout] | [INFO] [stdout] 34 | for columns in 0isize..c_limit.parse().unwrap() { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_columns` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let mut f = File::open(path).expect("Unable to open file"); [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/main.rs:36:29 [INFO] [stdout] | [INFO] [stdout] 36 | let mut product = &multiplier_rows * multiplier_cols; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:18:17 [INFO] [stdout] | [INFO] [stdout] 18 | let mut f = File::open(path).expect("Unable to open file"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `multiplier_cols` is never read [INFO] [stdout] --> src/main.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | let mut multiplier_cols: isize = 0; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `newline` [INFO] [stdout] --> src/main.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let newline = "\n"; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_newline` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:30:29 [INFO] [stdout] | [INFO] [stdout] 30 | Some(Value::Int(i)) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rows` [INFO] [stdout] --> src/main.rs:31:21 [INFO] [stdout] | [INFO] [stdout] 31 | for rows in 0isize..c_limit.parse().unwrap() { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `columns` [INFO] [stdout] --> src/main.rs:34:25 [INFO] [stdout] | [INFO] [stdout] 34 | for columns in 0isize..c_limit.parse().unwrap() { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_columns` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let mut f = File::open(path).expect("Unable to open file"); [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/main.rs:36:29 [INFO] [stdout] | [INFO] [stdout] 36 | let mut product = &multiplier_rows * multiplier_cols; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | File::create(path); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:38:25 [INFO] [stdout] | [INFO] [stdout] 38 | &data.push_str(&product.to_string()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:39:25 [INFO] [stdout] | [INFO] [stdout] 39 | &data.push_str(", "); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:40:25 [INFO] [stdout] | [INFO] [stdout] 40 | fs::write(path, &data); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:42:21 [INFO] [stdout] | [INFO] [stdout] 42 | &data.push_str("\n"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | File::create(path); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:38:25 [INFO] [stdout] | [INFO] [stdout] 38 | &data.push_str(&product.to_string()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:39:25 [INFO] [stdout] | [INFO] [stdout] 39 | &data.push_str(", "); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:40:25 [INFO] [stdout] | [INFO] [stdout] 40 | fs::write(path, &data); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:42:21 [INFO] [stdout] | [INFO] [stdout] 42 | &data.push_str("\n"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.33s [INFO] running `Command { std: "docker" "inspect" "b02ad11cfe30899d20c0e0011227541750a4040ed1a227e7672fa64b9fa3fbf4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b02ad11cfe30899d20c0e0011227541750a4040ed1a227e7672fa64b9fa3fbf4", kill_on_drop: false }` [INFO] [stdout] b02ad11cfe30899d20c0e0011227541750a4040ed1a227e7672fa64b9fa3fbf4