[INFO] cloning repository https://github.com/yagince/programming-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yagince/programming-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyagince%2Fprogramming-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyagince%2Fprogramming-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2fb11ea3e31e1d7584b541293cb56108d4b4ac0f [INFO] checking yagince/programming-rust against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyagince%2Fprogramming-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yagince/programming-rust on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yagince/programming-rust [INFO] finished tweaking git repo https://github.com/yagince/programming-rust [INFO] tweaked toml for git repo https://github.com/yagince/programming-rust written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/yagince/programming-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 767447954b16388ee331358b9b42e44ed0bfe1d6264f5a0ca8486b82bf696f20 [INFO] running `Command { std: "docker" "start" "-a" "767447954b16388ee331358b9b42e44ed0bfe1d6264f5a0ca8486b82bf696f20", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "767447954b16388ee331358b9b42e44ed0bfe1d6264f5a0ca8486b82bf696f20", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "767447954b16388ee331358b9b42e44ed0bfe1d6264f5a0ca8486b82bf696f20", kill_on_drop: false }` [INFO] [stdout] 767447954b16388ee331358b9b42e44ed0bfe1d6264f5a0ca8486b82bf696f20 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ce69a6398589ea2678a20fe0f09028cac749513275dc8df0b9d2bd3df8f9c02c [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" "ce69a6398589ea2678a20fe0f09028cac749513275dc8df0b9d2bd3df8f9c02c", kill_on_drop: false }` [INFO] [stderr] Checking samples v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `a_2` [INFO] [stdout] --> src/bin/4_3_copy.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let a_2 = a; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_a_2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/bin/4_4_rc_arc.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let t = s.clone(); // cloneすると参照カウントがインクリメントされるが実際はコピーされない [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/bin/4_4_rc_arc.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let u = s.clone(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/4_4_rc_arc.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let mut s = Rc::new("hoge".to_string()); [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: `aside` [INFO] [stdout] --> src/bin/5_3_share_refenrence.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let aside = v; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_aside` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> src/bin/5_3_share_refenrence.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let r1 = &mut r.1; // 可変参照から可変参照の再借用は出来る [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> src/bin/5_2_6_lifetime_parameter.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | y: &'b i32, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> src/bin/5_2_6_lifetime_parameter.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | y: &'b i32, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/bin/4_4_rc_arc.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let t = s.clone(); // cloneすると参照カウントがインクリメントされるが実際はコピーされない [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/bin/4_4_rc_arc.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let u = s.clone(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/4_4_rc_arc.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let mut s = Rc::new("hoge".to_string()); [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 import: `std::io::Result` [INFO] [stdout] --> src/bin/6_4_1_if_let.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::Result; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::Result` [INFO] [stdout] --> src/bin/6_4_1_if_let.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::Result; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `aside` [INFO] [stdout] --> src/bin/5_3_share_refenrence.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let aside = v; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_aside` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> src/bin/5_3_share_refenrence.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let r1 = &mut r.1; // 可変参照から可変参照の再借用は出来る [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a_2` [INFO] [stdout] --> src/bin/4_3_copy.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let a_2 = a; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_a_2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.55s [INFO] running `Command { std: "docker" "inspect" "ce69a6398589ea2678a20fe0f09028cac749513275dc8df0b9d2bd3df8f9c02c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce69a6398589ea2678a20fe0f09028cac749513275dc8df0b9d2bd3df8f9c02c", kill_on_drop: false }` [INFO] [stdout] ce69a6398589ea2678a20fe0f09028cac749513275dc8df0b9d2bd3df8f9c02c