[INFO] cloning repository https://github.com/modeverv/Rust2019 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/modeverv/Rust2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodeverv%2FRust2019", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodeverv%2FRust2019'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b3b7168d3df254b8c9695e73c6d68531f123921d [INFO] checking modeverv/Rust2019 against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodeverv%2FRust2019" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/modeverv/Rust2019 on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/modeverv/Rust2019 [INFO] finished tweaking git repo https://github.com/modeverv/Rust2019 [INFO] tweaked toml for git repo https://github.com/modeverv/Rust2019 written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/modeverv/Rust2019 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 10b67c326bfc82daeb92a151d35d495b0ccb2d47dd1ac7a542abe5fcfdc41b5e [INFO] running `Command { std: "docker" "start" "-a" "10b67c326bfc82daeb92a151d35d495b0ccb2d47dd1ac7a542abe5fcfdc41b5e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "10b67c326bfc82daeb92a151d35d495b0ccb2d47dd1ac7a542abe5fcfdc41b5e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "10b67c326bfc82daeb92a151d35d495b0ccb2d47dd1ac7a542abe5fcfdc41b5e", kill_on_drop: false }` [INFO] [stdout] 10b67c326bfc82daeb92a151d35d495b0ccb2d47dd1ac7a542abe5fcfdc41b5e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 692cd9219b4707e9f66a8c8569b858b4cad33dd36fc24df4ed948907e60a3bcc [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" "692cd9219b4707e9f66a8c8569b858b4cad33dd36fc24df4ed948907e60a3bcc", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking hello_world v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `xx` [INFO] [stdout] --> src/main.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | let (xx, y) = (1, 2); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_xx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `yy` [INFO] [stdout] --> src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let yy: i32 = 5; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_yy` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `yyy` is assigned to, but never used [INFO] [stdout] --> src/main.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut yyy = 5; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_yyy` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `yyy` is never read [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | yyy = 10; [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: `px` [INFO] [stdout] --> src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let px = true; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_px` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `py` [INFO] [stdout] --> src/main.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let py:bool = false; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_py` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pc` [INFO] [stdout] --> src/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let pc:char = 'x'; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_pc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `middle` [INFO] [stdout] --> src/main.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | let middle = &pa[1..4]; // [1,2,3] [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_middle` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ify` [INFO] [stdout] --> src/main.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let ify = if x == 5 { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ify` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ifyy` [INFO] [stdout] --> src/main.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let ifyy = if x == 5 { 10 } else { 15 }; // y: i32 [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_ifyy` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let mut pa = [0, 1, 2, 3, 4]; [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: unused variable: `xx` [INFO] [stdout] --> src/main.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | let (xx, y) = (1, 2); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_xx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `yy` [INFO] [stdout] --> src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let yy: i32 = 5; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_yy` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `yyy` is assigned to, but never used [INFO] [stdout] --> src/main.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut yyy = 5; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_yyy` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `yyy` is never read [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | yyy = 10; [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: `px` [INFO] [stdout] --> src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let px = true; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_px` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `py` [INFO] [stdout] --> src/main.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let py:bool = false; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_py` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pc` [INFO] [stdout] --> src/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let pc:char = 'x'; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_pc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `middle` [INFO] [stdout] --> src/main.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | let middle = &pa[1..4]; // [1,2,3] [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_middle` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ify` [INFO] [stdout] --> src/main.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let ify = if x == 5 { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_ify` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ifyy` [INFO] [stdout] --> src/main.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let ifyy = if x == 5 { 10 } else { 15 }; // y: i32 [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_ifyy` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let mut pa = [0, 1, 2, 3, 4]; [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: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.41s [INFO] running `Command { std: "docker" "inspect" "692cd9219b4707e9f66a8c8569b858b4cad33dd36fc24df4ed948907e60a3bcc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "692cd9219b4707e9f66a8c8569b858b4cad33dd36fc24df4ed948907e60a3bcc", kill_on_drop: false }` [INFO] [stdout] 692cd9219b4707e9f66a8c8569b858b4cad33dd36fc24df4ed948907e60a3bcc