[INFO] cloning repository https://github.com/ghotiphud/rust-intro [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ghotiphud/rust-intro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghotiphud%2Frust-intro", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghotiphud%2Frust-intro'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c72640c3eb4a803d29bd3eb29798bcb85e9b4054 [INFO] testing ghotiphud/rust-intro against master#1ddedbaa5919b7b3e70d984660e21e844c615c97 for pr-128400 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghotiphud%2Frust-intro" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ghotiphud/rust-intro on toolchain 1ddedbaa5919b7b3e70d984660e21e844c615c97 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ghotiphud/rust-intro [INFO] finished tweaking git repo https://github.com/ghotiphud/rust-intro [INFO] tweaked toml for git repo https://github.com/ghotiphud/rust-intro written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/ghotiphud/rust-intro 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" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] testing ghotiphud/rust-intro against try#33f1d8bb92813a1bfc23c093c9f443ab09290307 for pr-128400 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghotiphud%2Frust-intro" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ghotiphud/rust-intro on toolchain 33f1d8bb92813a1bfc23c093c9f443ab09290307 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ghotiphud/rust-intro [INFO] finished tweaking git repo https://github.com/ghotiphud/rust-intro [INFO] tweaked toml for git repo https://github.com/ghotiphud/rust-intro written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ghotiphud/rust-intro 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" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [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] testing ghotiphud/rust-intro against try#33f1d8bb92813a1bfc23c093c9f443ab09290307 for pr-128400 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghotiphud%2Frust-intro" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ghotiphud/rust-intro on toolchain 33f1d8bb92813a1bfc23c093c9f443ab09290307 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ghotiphud/rust-intro [INFO] finished tweaking git repo https://github.com/ghotiphud/rust-intro [INFO] tweaked toml for git repo https://github.com/ghotiphud/rust-intro written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ghotiphud/rust-intro 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" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Blocking waiting for file lock on package cache [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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 886b87b780e64694c184fb66094be8e81a68ad1f6d5e6c85e3d42aa9b7a4aab8 [INFO] running `Command { std: "docker" "start" "-a" "886b87b780e64694c184fb66094be8e81a68ad1f6d5e6c85e3d42aa9b7a4aab8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "886b87b780e64694c184fb66094be8e81a68ad1f6d5e6c85e3d42aa9b7a4aab8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "886b87b780e64694c184fb66094be8e81a68ad1f6d5e6c85e3d42aa9b7a4aab8", kill_on_drop: false }` [INFO] [stdout] 886b87b780e64694c184fb66094be8e81a68ad1f6d5e6c85e3d42aa9b7a4aab8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] db0e1baf7d900dc771b04c6be8d7aaaf2993553a847fe5d51b7296f476fa2e33 [INFO] running `Command { std: "docker" "start" "-a" "db0e1baf7d900dc771b04c6be8d7aaaf2993553a847fe5d51b7296f476fa2e33", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling rust_intro v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let y = &x[0]; //Borrow(Reference) the first element of x [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/types.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(core_intrinsics)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/safety.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let y = &x[0]; //Borrow(Reference) the first element of x [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/safety.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut x = vec![10, 20]; //Create vec owned by x [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: function `iterator` is never used [INFO] [stdout] --> src/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn iterator() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `sum_pos` is never used [INFO] [stdout] --> src/main.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn sum_pos(v: &Vec) -> i32 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/types.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 17 | let mut y = x as i64; [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: unnecessary `unsafe` block [INFO] [stdout] --> src/types.rs:71:9 [INFO] [stdout] | [INFO] [stdout] 71 | unsafe { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `None`, `Two`, and `Three` are never constructed [INFO] [stdout] --> src/types.rs:54:16 [INFO] [stdout] | [INFO] [stdout] 54 | enum Options { None, One, Two, Three } [INFO] [stdout] | ------- ^^^^ ^^^ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | variants in this enum [INFO] [stdout] | [INFO] [stdout] = note: `Options` 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: unused return value of `collect` that must be used [INFO] [stdout] --> src/concurrent.rs:140:5 [INFO] [stdout] | [INFO] [stdout] 140 | handles.into_iter().map(|h| h.join().unwrap()).collect::>(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 140 | let _ = handles.into_iter().map(|h| h.join().unwrap()).collect::>(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.16s [INFO] running `Command { std: "docker" "inspect" "db0e1baf7d900dc771b04c6be8d7aaaf2993553a847fe5d51b7296f476fa2e33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "db0e1baf7d900dc771b04c6be8d7aaaf2993553a847fe5d51b7296f476fa2e33", kill_on_drop: false }` [INFO] [stdout] db0e1baf7d900dc771b04c6be8d7aaaf2993553a847fe5d51b7296f476fa2e33 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 36ff173c5472d757fb67aa64fcd10b021d19567443ce41bde3567834f47c1205 [INFO] running `Command { std: "docker" "start" "-a" "36ff173c5472d757fb67aa64fcd10b021d19567443ce41bde3567834f47c1205", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling rust_intro v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/types.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(core_intrinsics)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/safety.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let y = &x[0]; //Borrow(Reference) the first element of x [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/safety.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut x = vec![10, 20]; //Create vec owned by x [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: value assigned to `y` is never read [INFO] [stdout] --> src/types.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 17 | let mut y = x as i64; [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: unnecessary `unsafe` block [INFO] [stdout] --> src/types.rs:71:9 [INFO] [stdout] | [INFO] [stdout] 71 | unsafe { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `None`, `Two`, and `Three` are never constructed [INFO] [stdout] --> src/types.rs:54:16 [INFO] [stdout] | [INFO] [stdout] 54 | enum Options { None, One, Two, Three } [INFO] [stdout] | ------- ^^^^ ^^^ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | variants in this enum [INFO] [stdout] | [INFO] [stdout] = note: `Options` 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: unused variable: `y` [INFO] [stdout] --> src/main.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let y = &x[0]; //Borrow(Reference) the first element of x [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `iterator` is never used [INFO] [stdout] --> src/main.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn iterator() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `sum_pos` is never used [INFO] [stdout] --> src/main.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn sum_pos(v: &Vec) -> i32 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `collect` that must be used [INFO] [stdout] --> src/concurrent.rs:140:5 [INFO] [stdout] | [INFO] [stdout] 140 | handles.into_iter().map(|h| h.join().unwrap()).collect::>(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 140 | let _ = handles.into_iter().map(|h| h.join().unwrap()).collect::>(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.75s [INFO] running `Command { std: "docker" "inspect" "36ff173c5472d757fb67aa64fcd10b021d19567443ce41bde3567834f47c1205", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "36ff173c5472d757fb67aa64fcd10b021d19567443ce41bde3567834f47c1205", kill_on_drop: false }` [INFO] [stdout] 36ff173c5472d757fb67aa64fcd10b021d19567443ce41bde3567834f47c1205 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 502ebdc289d6fed13334161bf5769863ba911ede022347f102d5fa8cbe730790 [INFO] running `Command { std: "docker" "start" "-a" "502ebdc289d6fed13334161bf5769863ba911ede022347f102d5fa8cbe730790", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/safety.rs:3:9 [INFO] [stderr] | [INFO] [stderr] 3 | let y = &x[0]; //Borrow(Reference) the first element of x [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/safety.rs:2:9 [INFO] [stderr] | [INFO] [stderr] 2 | let mut x = vec![10, 20]; //Create vec owned by x [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `rust_intro` (bin "safety" test) generated 2 warnings (run `cargo fix --bin "safety" --tests` to apply 1 suggestion) [INFO] [stderr] warning: unused return value of `collect` that must be used [INFO] [stderr] --> src/concurrent.rs:140:5 [INFO] [stderr] | [INFO] [stderr] 140 | handles.into_iter().map(|h| h.join().unwrap()).collect::>(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 140 | let _ = handles.into_iter().map(|h| h.join().unwrap()).collect::>(); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | let y = &x[0]; //Borrow(Reference) the first element of x [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `iterator` is never used [INFO] [stderr] --> src/main.rs:9:4 [INFO] [stderr] | [INFO] [stderr] 9 | fn iterator() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `sum_pos` is never used [INFO] [stderr] --> src/main.rs:16:4 [INFO] [stderr] | [INFO] [stderr] 16 | fn sum_pos(v: &Vec) -> i32 { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: the feature `core_intrinsics` is internal to the compiler or standard library [INFO] [stderr] --> src/types.rs:1:12 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(core_intrinsics)] [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: using it is strongly discouraged [INFO] [stderr] = note: `#[warn(internal_features)]` on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `y` is never read [INFO] [stderr] --> src/types.rs:17:13 [INFO] [stderr] | [INFO] [stderr] 17 | let mut y = x as i64; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary `unsafe` block [INFO] [stderr] --> src/types.rs:71:9 [INFO] [stderr] | [INFO] [stderr] 71 | unsafe { [INFO] [stderr] | ^^^^^^ unnecessary `unsafe` block [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variants `None`, `Two`, and `Three` are never constructed [INFO] [stderr] --> src/types.rs:54:16 [INFO] [stderr] | [INFO] [stderr] 54 | enum Options { None, One, Two, Three } [INFO] [stderr] | ------- ^^^^ ^^^ ^^^^^ [INFO] [stderr] | | [INFO] [stderr] | variants in this enum [INFO] [stderr] | [INFO] [stderr] = note: `Options` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `rust_intro` (bin "concurrent" test) generated 1 warning [INFO] [stderr] warning: `rust_intro` (bin "main" test) generated 3 warnings [INFO] [stderr] warning: `rust_intro` (bin "types" test) generated 4 warnings [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/concurrent.rs (/opt/rustwide/target/debug/deps/concurrent-d97c46f8cfa8fe08) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/main-7ae0a14125552202) [INFO] [stderr] Running unittests src/memory.rs (/opt/rustwide/target/debug/deps/memory-1c3e74e50cc365ee) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] Running unittests src/safety.rs (/opt/rustwide/target/debug/deps/safety-e951e4e7957b62f1) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests src/traits.rs (/opt/rustwide/target/debug/deps/traits-d5d871ff52056f5b) [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/types.rs (/opt/rustwide/target/debug/deps/types-b1c966ab2e8ad439) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "502ebdc289d6fed13334161bf5769863ba911ede022347f102d5fa8cbe730790", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "502ebdc289d6fed13334161bf5769863ba911ede022347f102d5fa8cbe730790", kill_on_drop: false }` [INFO] [stdout] 502ebdc289d6fed13334161bf5769863ba911ede022347f102d5fa8cbe730790