[INFO] cloning repository https://github.com/qinzhengke/rust-lang-example [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qinzhengke/rust-lang-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqinzhengke%2Frust-lang-example", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqinzhengke%2Frust-lang-example'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cb8fe0ad69e0de43a8d14e4063856fea3fa346aa [INFO] testing qinzhengke/rust-lang-example against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqinzhengke%2Frust-lang-example" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/qinzhengke/rust-lang-example on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/qinzhengke/rust-lang-example [INFO] finished tweaking git repo https://github.com/qinzhengke/rust-lang-example [INFO] tweaked toml for git repo https://github.com/qinzhengke/rust-lang-example written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/qinzhengke/rust-lang-example already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b907f3cdad5f325cb758f4e2a28c17237d9fa3082238c0e3a61057d89efd79af [INFO] running `Command { std: "docker" "start" "-a" "b907f3cdad5f325cb758f4e2a28c17237d9fa3082238c0e3a61057d89efd79af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b907f3cdad5f325cb758f4e2a28c17237d9fa3082238c0e3a61057d89efd79af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b907f3cdad5f325cb758f4e2a28c17237d9fa3082238c0e3a61057d89efd79af", kill_on_drop: false }` [INFO] [stdout] b907f3cdad5f325cb758f4e2a28c17237d9fa3082238c0e3a61057d89efd79af [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3b0ce4c5c16d9303c50494297e1fb9e84e6d4e23b14241d0e0fe2aab1c2df2ba [INFO] running `Command { std: "docker" "start" "-a" "3b0ce4c5c16d9303c50494297e1fb9e84e6d4e23b14241d0e0fe2aab1c2df2ba", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling rust-lang-example v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> src/ownership.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let r2 = &mut s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [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/ownership.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let mut s1 = String::from("hello"); [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/types.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut c:i8 = -10; [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/types.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let mut d:u8 = 255; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.11s [INFO] running `Command { std: "docker" "inspect" "3b0ce4c5c16d9303c50494297e1fb9e84e6d4e23b14241d0e0fe2aab1c2df2ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3b0ce4c5c16d9303c50494297e1fb9e84e6d4e23b14241d0e0fe2aab1c2df2ba", kill_on_drop: false }` [INFO] [stdout] 3b0ce4c5c16d9303c50494297e1fb9e84e6d4e23b14241d0e0fe2aab1c2df2ba [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4b06c7f1a51f6f162ce3722a49210f4b1c15179a94f69cbd5bef1f6a085ad379 [INFO] running `Command { std: "docker" "start" "-a" "4b06c7f1a51f6f162ce3722a49210f4b1c15179a94f69cbd5bef1f6a085ad379", kill_on_drop: false }` [INFO] [stderr] Compiling rust-lang-example v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> src/ownership.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let r2 = &mut s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [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/ownership.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let mut s1 = String::from("hello"); [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/types.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut c:i8 = -10; [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/types.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let mut d:u8 = 255; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.33s [INFO] running `Command { std: "docker" "inspect" "4b06c7f1a51f6f162ce3722a49210f4b1c15179a94f69cbd5bef1f6a085ad379", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4b06c7f1a51f6f162ce3722a49210f4b1c15179a94f69cbd5bef1f6a085ad379", kill_on_drop: false }` [INFO] [stdout] 4b06c7f1a51f6f162ce3722a49210f4b1c15179a94f69cbd5bef1f6a085ad379 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 61972bafa5fac55b828a98af3d5291ee0d27985e797edfcb463f3c04b77f70d3 [INFO] running `Command { std: "docker" "start" "-a" "61972bafa5fac55b828a98af3d5291ee0d27985e797edfcb463f3c04b77f70d3", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/types.rs:9:9 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] 9 | let mut c:i8 = -10; [INFO] [stdout] [INFO] [stderr] | ----^ [INFO] [stdout] [INFO] [stderr] | | [INFO] [stdout] running 0 tests [INFO] [stderr] | help: remove this `mut` [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/types.rs:24:9 [INFO] [stderr] | [INFO] [stderr] 24 | let mut d:u8 = 255; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r2` [INFO] [stderr] --> src/ownership.rs:57:9 [INFO] [stderr] | [INFO] [stderr] 57 | let r2 = &mut s1; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [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/ownership.rs:62:9 [INFO] [stderr] | [INFO] [stderr] 62 | let mut s1 = String::from("hello"); [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: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/control_flow-e44590dcd729b5bc) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/functions-684861f4531139dc) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/ownership-99b625127e3571b1) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/print-72430cadfc0e1ca0) [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/strings-b26e6a365da0f438) [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 (/opt/rustwide/target/debug/deps/types-7ad7d1f71cd6a16c) [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] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/vars-3f806b19a77b611e) [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" "61972bafa5fac55b828a98af3d5291ee0d27985e797edfcb463f3c04b77f70d3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "61972bafa5fac55b828a98af3d5291ee0d27985e797edfcb463f3c04b77f70d3", kill_on_drop: false }` [INFO] [stdout] 61972bafa5fac55b828a98af3d5291ee0d27985e797edfcb463f3c04b77f70d3