[INFO] cloning repository https://github.com/lukasvrenner/terees [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lukasvrenner/terees" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukasvrenner%2Fterees", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukasvrenner%2Fterees'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2b45f7eef514a1f0f320d1ccf344b89c1a12c500 [INFO] checking lukasvrenner/terees against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukasvrenner%2Fterees" "/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/lukasvrenner/terees on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lukasvrenner/terees [INFO] finished tweaking git repo https://github.com/lukasvrenner/terees [INFO] tweaked toml for git repo https://github.com/lukasvrenner/terees written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/lukasvrenner/terees 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] da4bcb2d87993e6186dba1caa958a99c242c0b2413e1c0192ad1759c393b41a9 [INFO] running `Command { std: "docker" "start" "-a" "da4bcb2d87993e6186dba1caa958a99c242c0b2413e1c0192ad1759c393b41a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "da4bcb2d87993e6186dba1caa958a99c242c0b2413e1c0192ad1759c393b41a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da4bcb2d87993e6186dba1caa958a99c242c0b2413e1c0192ad1759c393b41a9", kill_on_drop: false }` [INFO] [stdout] da4bcb2d87993e6186dba1caa958a99c242c0b2413e1c0192ad1759c393b41a9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 24132ec828cde89ade2c5ec6ab47cdd62ba0b2208c821cd8ab91f03bec496aa0 [INFO] running `Command { std: "docker" "start" "-a" "24132ec828cde89ade2c5ec6ab47cdd62ba0b2208c821cd8ab91f03bec496aa0", kill_on_drop: false }` [INFO] [stderr] Checking terees v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `remove_me` [INFO] [stdout] --> src/binary_search_tree.rs:56:17 [INFO] [stdout] | [INFO] [stdout] 56 | let mut remove_me = self.find_mut(key); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remove_me` [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/binary_search_tree.rs:56:13 [INFO] [stdout] | [INFO] [stdout] 56 | let mut remove_me = self.find_mut(key); [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: `other` [INFO] [stdout] --> src/binary_search_tree.rs:92:26 [INFO] [stdout] | [INFO] [stdout] 92 | fn concat(&mut self, other: Self) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_other` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `remove_me` [INFO] [stdout] --> src/binary_search_tree.rs:56:17 [INFO] [stdout] | [INFO] [stdout] 56 | let mut remove_me = self.find_mut(key); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remove_me` [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/binary_search_tree.rs:56:13 [INFO] [stdout] | [INFO] [stdout] 56 | let mut remove_me = self.find_mut(key); [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: `other` [INFO] [stdout] --> src/binary_search_tree.rs:92:26 [INFO] [stdout] | [INFO] [stdout] 92 | fn concat(&mut self, other: Self) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_other` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/linked_list.rs:87:23 [INFO] [stdout] | [INFO] [stdout] 87 | pub fn get(&self, index: usize) -> Option<&T> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/linked_list.rs:92:31 [INFO] [stdout] | [INFO] [stdout] 92 | pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/linked_list.rs:87:23 [INFO] [stdout] | [INFO] [stdout] 87 | pub fn get(&self, index: usize) -> Option<&T> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/linked_list.rs:92:31 [INFO] [stdout] | [INFO] [stdout] 92 | pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s [INFO] running `Command { std: "docker" "inspect" "24132ec828cde89ade2c5ec6ab47cdd62ba0b2208c821cd8ab91f03bec496aa0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "24132ec828cde89ade2c5ec6ab47cdd62ba0b2208c821cd8ab91f03bec496aa0", kill_on_drop: false }` [INFO] [stdout] 24132ec828cde89ade2c5ec6ab47cdd62ba0b2208c821cd8ab91f03bec496aa0 [INFO] checking lukasvrenner/terees against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukasvrenner%2Fterees" "/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/lukasvrenner/terees on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lukasvrenner/terees [INFO] finished tweaking git repo https://github.com/lukasvrenner/terees [INFO] tweaked toml for git repo https://github.com/lukasvrenner/terees written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/lukasvrenner/terees 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d25432ce5a037f5ecb09e611bd709f83d324cae619c985792d38b49b0842dbc3 [INFO] running `Command { std: "docker" "start" "-a" "d25432ce5a037f5ecb09e611bd709f83d324cae619c985792d38b49b0842dbc3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d25432ce5a037f5ecb09e611bd709f83d324cae619c985792d38b49b0842dbc3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d25432ce5a037f5ecb09e611bd709f83d324cae619c985792d38b49b0842dbc3", kill_on_drop: false }` [INFO] [stdout] d25432ce5a037f5ecb09e611bd709f83d324cae619c985792d38b49b0842dbc3 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3b8db273180129b86ed89b522e2872ae39f4e02f7ab89080abf1c567ba8d9142 [INFO] running `Command { std: "docker" "start" "-a" "3b8db273180129b86ed89b522e2872ae39f4e02f7ab89080abf1c567ba8d9142", kill_on_drop: false }` [INFO] [stderr] Checking terees v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `remove_me` [INFO] [stdout] --> src/binary_search_tree.rs:56:17 [INFO] [stdout] | [INFO] [stdout] 56 | let mut remove_me = self.find_mut(key); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remove_me` [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/binary_search_tree.rs:56:13 [INFO] [stdout] | [INFO] [stdout] 56 | let mut remove_me = self.find_mut(key); [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: `other` [INFO] [stdout] --> src/binary_search_tree.rs:92:26 [INFO] [stdout] | [INFO] [stdout] 92 | fn concat(&mut self, other: Self) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_other` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/linked_list.rs:87:23 [INFO] [stdout] | [INFO] [stdout] 87 | pub fn get(&self, index: usize) -> Option<&T> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/linked_list.rs:92:31 [INFO] [stdout] | [INFO] [stdout] 92 | pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `remove_me` [INFO] [stdout] --> src/binary_search_tree.rs:56:17 [INFO] [stdout] | [INFO] [stdout] 56 | let mut remove_me = self.find_mut(key); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remove_me` [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/binary_search_tree.rs:56:13 [INFO] [stdout] | [INFO] [stdout] 56 | let mut remove_me = self.find_mut(key); [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: `other` [INFO] [stdout] --> src/binary_search_tree.rs:92:26 [INFO] [stdout] | [INFO] [stdout] 92 | fn concat(&mut self, other: Self) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_other` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/linked_list.rs:87:23 [INFO] [stdout] | [INFO] [stdout] 87 | pub fn get(&self, index: usize) -> Option<&T> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> src/linked_list.rs:92:31 [INFO] [stdout] | [INFO] [stdout] 92 | pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s [INFO] running `Command { std: "docker" "inspect" "3b8db273180129b86ed89b522e2872ae39f4e02f7ab89080abf1c567ba8d9142", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3b8db273180129b86ed89b522e2872ae39f4e02f7ab89080abf1c567ba8d9142", kill_on_drop: false }` [INFO] [stdout] 3b8db273180129b86ed89b522e2872ae39f4e02f7ab89080abf1c567ba8d9142