[INFO] cloning repository https://github.com/myself659/avltree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/myself659/avltree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmyself659%2Favltree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmyself659%2Favltree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2408a6a6eadad2c48086268f33aba7039affcde8 [INFO] checking myself659/avltree against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmyself659%2Favltree" "/workspace/builds/worker-15/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/myself659/avltree on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/myself659/avltree [INFO] finished tweaking git repo https://github.com/myself659/avltree [INFO] tweaked toml for git repo https://github.com/myself659/avltree written to /workspace/builds/worker-15/source/Cargo.toml [INFO] crate git repo https://github.com/myself659/avltree already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded env_logger v0.6.2 [INFO] [stderr] Downloaded quickcheck v0.8.5 [INFO] [stderr] Downloaded regex v1.2.1 [INFO] [stderr] Downloaded regex-syntax v0.6.11 [INFO] [stderr] Downloaded libc v0.2.61 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 61421ac7155416f2ea8c847bf849100cf48af0961d32879ab557d6603192242c [INFO] running `Command { std: "docker" "start" "-a" "61421ac7155416f2ea8c847bf849100cf48af0961d32879ab557d6603192242c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "61421ac7155416f2ea8c847bf849100cf48af0961d32879ab557d6603192242c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "61421ac7155416f2ea8c847bf849100cf48af0961d32879ab557d6603192242c", kill_on_drop: false }` [INFO] [stdout] 61421ac7155416f2ea8c847bf849100cf48af0961d32879ab557d6603192242c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fbfa991deac0cfbea8920a3c9793d38bfdb9cc98e7118cc25415dc631487d4bf [INFO] running `Command { std: "docker" "start" "-a" "fbfa991deac0cfbea8920a3c9793d38bfdb9cc98e7118cc25415dc631487d4bf", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] Running `cargo fix --edition` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.61 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking regex-syntax v0.6.11 [INFO] [stderr] Checking avltree v0.1.0 (/tmp/fixit) [INFO] [stderr] Checking itertools v0.8.0 [INFO] [stderr] Checking rand_chacha v0.1.1 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking rand_pcg v0.1.2 [INFO] [stderr] Migrating src/lib.rs from 2018 edition to 2021 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/set.rs:118:17 [INFO] [stdout] | [INFO] [stdout] 118 | replace(&mut target_node.right, right_node.right.take()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/set.rs:139:17 [INFO] [stdout] | [INFO] [stdout] 139 | replace(&mut parent_left_node.left, leftmost_node.right.take()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Migrating src/bin/bin.rs from 2018 edition to 2021 [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Checking regex v1.2.1 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking quickcheck v0.8.5 [INFO] [stderr] Compiling quickcheck_macros v0.8.0 [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/set.rs:118:17 [INFO] [stdout] | [INFO] [stdout] 118 | replace(&mut target_node.right, right_node.right.take()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/set.rs:139:17 [INFO] [stdout] | [INFO] [stdout] 139 | replace(&mut parent_left_node.left, leftmost_node.right.take()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 16.31s [INFO] [stderr] Running `cargo check` to verify 2021 [INFO] [stderr] Checking avltree v0.1.0 (/tmp/fixit) [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/set.rs:118:17 [INFO] [stdout] | [INFO] [stdout] 118 | replace(&mut target_node.right, right_node.right.take()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/set.rs:139:17 [INFO] [stdout] | [INFO] [stdout] 139 | replace(&mut parent_left_node.left, leftmost_node.right.take()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/set.rs:118:17 [INFO] [stdout] | [INFO] [stdout] 118 | replace(&mut target_node.right, right_node.right.take()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/set.rs:139:17 [INFO] [stdout] | [INFO] [stdout] 139 | replace(&mut parent_left_node.left, leftmost_node.right.take()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.66s [INFO] running `Command { std: "docker" "inspect" "fbfa991deac0cfbea8920a3c9793d38bfdb9cc98e7118cc25415dc631487d4bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fbfa991deac0cfbea8920a3c9793d38bfdb9cc98e7118cc25415dc631487d4bf", kill_on_drop: false }` [INFO] [stdout] fbfa991deac0cfbea8920a3c9793d38bfdb9cc98e7118cc25415dc631487d4bf