[INFO] cloning repository https://github.com/xiaowang7777/graph_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xiaowang7777/graph_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaowang7777%2Fgraph_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaowang7777%2Fgraph_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] dfca29a94b6348ee307d639ae989305c7030f21d [INFO] checking xiaowang7777/graph_rust against try#5e7498e6740d105521420ac0ab146e2c7a21596d for pr-138363 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaowang7777%2Fgraph_rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/xiaowang7777/graph_rust on toolchain 5e7498e6740d105521420ac0ab146e2c7a21596d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e7498e6740d105521420ac0ab146e2c7a21596d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/xiaowang7777/graph_rust [INFO] finished tweaking git repo https://github.com/xiaowang7777/graph_rust [INFO] tweaked toml for git repo https://github.com/xiaowang7777/graph_rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/xiaowang7777/graph_rust 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" "+5e7498e6740d105521420ac0ab146e2c7a21596d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+5e7498e6740d105521420ac0ab146e2c7a21596d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 768be2088dcfeb7c4f276d1e574ea34013c6f846c81b01173d8d26fdf81c3c77 [INFO] running `Command { std: "docker" "start" "-a" "768be2088dcfeb7c4f276d1e574ea34013c6f846c81b01173d8d26fdf81c3c77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "768be2088dcfeb7c4f276d1e574ea34013c6f846c81b01173d8d26fdf81c3c77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "768be2088dcfeb7c4f276d1e574ea34013c6f846c81b01173d8d26fdf81c3c77", kill_on_drop: false }` [INFO] [stdout] 768be2088dcfeb7c4f276d1e574ea34013c6f846c81b01173d8d26fdf81c3c77 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+5e7498e6740d105521420ac0ab146e2c7a21596d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c4140c2e4c0d706cd018a87970c161414ffb318b563b61020bed0675b32506ef [INFO] running `Command { std: "docker" "start" "-a" "c4140c2e4c0d706cd018a87970c161414ffb318b563b61020bed0675b32506ef", kill_on_drop: false }` [INFO] [stderr] Checking rust_stu v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::any::TypeId` [INFO] [stdout] --> src/graph.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::any::TypeId; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::Read` [INFO] [stdout] --> src/graph.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::Read; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::any::TypeId` [INFO] [stdout] --> src/graph.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::any::TypeId; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::Read` [INFO] [stdout] --> src/graph.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::Read; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `GraphPath` and `Graph` [INFO] [stdout] --> src/graph/simple.rs:203:24 [INFO] [stdout] | [INFO] [stdout] 203 | use crate::graph::{Graph, GraphPath}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::graph::simple::SimpleGraph` [INFO] [stdout] --> src/graph/simple.rs:204:9 [INFO] [stdout] | [INFO] [stdout] 204 | use crate::graph::simple::SimpleGraph; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `GraphPath` and `Graph` [INFO] [stdout] --> src/graph/safe_simple.rs:185:24 [INFO] [stdout] | [INFO] [stdout] 185 | use crate::graph::{Graph, GraphPath}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::graph::simple::SimpleGraph` [INFO] [stdout] --> src/graph/safe_simple.rs:186:9 [INFO] [stdout] | [INFO] [stdout] 186 | use crate::graph::simple::SimpleGraph; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/graph.rs:33:19 [INFO] [stdout] | [INFO] [stdout] 33 | fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/graph.rs:39:19 [INFO] [stdout] | [INFO] [stdout] 39 | fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reader` [INFO] [stdout] --> src/graph/simple.rs:34:24 [INFO] [stdout] | [INFO] [stdout] 34 | fn new_with_reader(reader: Box) -> Self { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/graph.rs:33:19 [INFO] [stdout] | [INFO] [stdout] 33 | fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/graph.rs:39:19 [INFO] [stdout] | [INFO] [stdout] 39 | fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/graph/simple.rs:82:21 [INFO] [stdout] | [INFO] [stdout] 82 | fn to_bfs(self, v: usize) -> Self::BFSItem { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reader` [INFO] [stdout] --> src/graph/simple.rs:34:24 [INFO] [stdout] | [INFO] [stdout] 34 | fn new_with_reader(reader: Box) -> Self { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/graph/simple.rs:104:13 [INFO] [stdout] | [INFO] [stdout] 104 | let mut p = SimpleDFSGraphPath { [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: `v` [INFO] [stdout] --> src/graph/simple.rs:82:21 [INFO] [stdout] | [INFO] [stdout] 82 | fn to_bfs(self, v: usize) -> Self::BFSItem { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/graph/simple.rs:104:13 [INFO] [stdout] | [INFO] [stdout] 104 | let mut p = SimpleDFSGraphPath { [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: `reader` [INFO] [stdout] --> src/graph/safe_simple.rs:34:24 [INFO] [stdout] | [INFO] [stdout] 34 | fn new_with_reader(reader: Box) -> Self { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/graph/safe_simple.rs:82:21 [INFO] [stdout] | [INFO] [stdout] 82 | fn to_bfs(self, v: usize) -> Self::BFSItem { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reader` [INFO] [stdout] --> src/graph/safe_simple.rs:34:24 [INFO] [stdout] | [INFO] [stdout] 34 | fn new_with_reader(reader: Box) -> Self { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/graph/safe_simple.rs:82:21 [INFO] [stdout] | [INFO] [stdout] 82 | fn to_bfs(self, v: usize) -> Self::BFSItem { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time [INFO] [stdout] --> src/graph/safe_simple.rs:136:17 [INFO] [stdout] | [INFO] [stdout] 123 | if let Some(node) = (&mut self.list).get_mut(point) { [INFO] [stdout] | ---------------- first mutable borrow occurs here [INFO] [stdout] 124 | let mut len: usize = 0; [INFO] [stdout] 125 | while let Some(&mut n) = (&mut node.list).get_mut(len) { [INFO] [stdout] | ---------------- first borrow later used here [INFO] [stdout] ... [INFO] [stdout] 136 | self.dfs(n as usize); [INFO] [stdout] | ^^^^ second mutable borrow occurs here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `*self` as mutable more than once at a time [INFO] [stdout] --> src/graph/safe_simple.rs:136:17 [INFO] [stdout] | [INFO] [stdout] 123 | if let Some(node) = (&mut self.list).get_mut(point) { [INFO] [stdout] | ---------------- first mutable borrow occurs here [INFO] [stdout] 124 | let mut len: usize = 0; [INFO] [stdout] 125 | while let Some(&mut n) = (&mut node.list).get_mut(len) { [INFO] [stdout] | ---------------- first borrow later used here [INFO] [stdout] ... [INFO] [stdout] 136 | self.dfs(n as usize); [INFO] [stdout] | ^^^^ second mutable borrow occurs here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0499`. [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0499`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_stu` (bin "rust_stu") due to 1 previous error; 13 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `rust_stu` (bin "rust_stu" test) due to 1 previous error; 9 warnings emitted [INFO] running `Command { std: "docker" "inspect" "c4140c2e4c0d706cd018a87970c161414ffb318b563b61020bed0675b32506ef", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c4140c2e4c0d706cd018a87970c161414ffb318b563b61020bed0675b32506ef", kill_on_drop: false }` [INFO] [stdout] c4140c2e4c0d706cd018a87970c161414ffb318b563b61020bed0675b32506ef