[INFO] fetching crate rs-graphs 0.1.2...
[INFO] testing rs-graphs-0.1.2 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate rs-graphs 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate rs-graphs 0.1.2
[INFO] finished tweaking crates.io crate rs-graphs 0.1.2
[INFO] tweaked toml for crates.io crate rs-graphs 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rs-graphs 0.1.2 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ae498d4102f009131b5ece39507d7b754532314d6dc2ae1856a31a0a3d49467
[INFO] running `Command { std: "docker" "start" "-a" "1ae498d4102f009131b5ece39507d7b754532314d6dc2ae1856a31a0a3d49467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ae498d4102f009131b5ece39507d7b754532314d6dc2ae1856a31a0a3d49467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ae498d4102f009131b5ece39507d7b754532314d6dc2ae1856a31a0a3d49467", kill_on_drop: false }`
[INFO] [stdout] 1ae498d4102f009131b5ece39507d7b754532314d6dc2ae1856a31a0a3d49467
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c6e0ffb45957adddd2ccb852e308e6351118bbdde74caf9929c894fbeb73bfe
[INFO] running `Command { std: "docker" "start" "-a" "7c6e0ffb45957adddd2ccb852e308e6351118bbdde74caf9929c894fbeb73bfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling rs-graphs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/graph.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet, VecDeque};
[INFO] [stdout]   |                                          ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> src/serialize.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/serialize.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut all_data = save_obj.all_data.clone();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_name_by_idx` is never used
[INFO] [stdout]   --> src/graph.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T> ArenaList<T> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn get_name_by_idx(&self, idx: usize) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "7c6e0ffb45957adddd2ccb852e308e6351118bbdde74caf9929c894fbeb73bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6e0ffb45957adddd2ccb852e308e6351118bbdde74caf9929c894fbeb73bfe", kill_on_drop: false }`
[INFO] [stdout] 7c6e0ffb45957adddd2ccb852e308e6351118bbdde74caf9929c894fbeb73bfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16be92a49329dd4fac68ed20587d96ef1828ff7bfbde9f9719ee94abc8e15b7d
[INFO] running `Command { std: "docker" "start" "-a" "16be92a49329dd4fac68ed20587d96ef1828ff7bfbde9f9719ee94abc8e15b7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs-graphs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/graph.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet, VecDeque};
[INFO] [stdout]   |                                          ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> src/serialize.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/serialize.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut all_data = save_obj.all_data.clone();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_name_by_idx` is never used
[INFO] [stdout]   --> src/graph.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T> ArenaList<T> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn get_name_by_idx(&self, idx: usize) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> tests/test_graph.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> tests/test_graph.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rs_graphs::graph::{Node, ArenaList, Graph};
[INFO] [stdout]   |                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> tests/test_save.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> tests/test_save.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rs_graphs::graph::{Node, ArenaList, Graph};
[INFO] [stdout]   |                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `all_node_names`
[INFO] [stdout]   --> tests/test_graph.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let all_node_names: Vec<&String> = graph.get_all_node_names();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_all_node_names`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `all_edges`
[INFO] [stdout]   --> tests/test_graph.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let all_edges: Vec<(usize, usize)> = graph.get_all_edges();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_all_edges`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/graph.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet, VecDeque};
[INFO] [stdout]   |                                          ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> src/serialize.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/serialize.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut all_data = save_obj.all_data.clone();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_name_by_idx` is never used
[INFO] [stdout]   --> src/graph.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<T> ArenaList<T> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn get_name_by_idx(&self, idx: usize) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "16be92a49329dd4fac68ed20587d96ef1828ff7bfbde9f9719ee94abc8e15b7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16be92a49329dd4fac68ed20587d96ef1828ff7bfbde9f9719ee94abc8e15b7d", kill_on_drop: false }`
[INFO] [stdout] 16be92a49329dd4fac68ed20587d96ef1828ff7bfbde9f9719ee94abc8e15b7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 592ccd44740e4e09e3c54c2cb9183b28d92fa00b883e68e47a1d400bf363e270
[INFO] running `Command { std: "docker" "start" "-a" "592ccd44740e4e09e3c54c2cb9183b28d92fa00b883e68e47a1d400bf363e270", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `VecDeque`
[INFO] [stderr]  --> src/graph.rs:1:42
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, HashSet, VecDeque};
[INFO] [stderr]   |                                          ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stderr]  --> src/serialize.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/serialize.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let mut all_data = save_obj.all_data.clone();
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_name_by_idx` is never used
[INFO] [stderr]   --> src/graph.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | impl<T> ArenaList<T> {
[INFO] [stderr]    | -------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 63 |     fn get_name_by_idx(&self, idx: usize) -> &str {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rs-graphs` (lib) generated 4 warnings (run `cargo fix --lib -p rs-graphs` to apply 3 suggestions)
[INFO] [stderr] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stderr]  --> tests/test_save.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Node`
[INFO] [stderr]  --> tests/test_save.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rs_graphs::graph::{Node, ArenaList, Graph};
[INFO] [stderr]   |                        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stderr]  --> tests/test_graph.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, HashSet};
[INFO] [stderr]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Node`
[INFO] [stderr]  --> tests/test_graph.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rs_graphs::graph::{Node, ArenaList, Graph};
[INFO] [stderr]   |                        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `all_node_names`
[INFO] [stderr]   --> tests/test_graph.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let all_node_names: Vec<&String> = graph.get_all_node_names();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_all_node_names`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `all_edges`
[INFO] [stderr]   --> tests/test_graph.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let all_edges: Vec<(usize, usize)> = graph.get_all_edges();
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_all_edges`
[INFO] [stderr] 
[INFO] [stderr] warning: `rs-graphs` (test "test_save") generated 2 warnings (run `cargo fix --test "test_save" -p rs-graphs` to apply 2 suggestions)
[INFO] [stderr] warning: `rs-graphs` (test "test_graph") generated 4 warnings (run `cargo fix --test "test_graph" -p rs-graphs` to apply 4 suggestions)
[INFO] [stderr] warning: `rs-graphs` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rs_graphs-5499086758f49df0)
[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 tests/test_graph.rs (/opt/rustwide/target/debug/deps/test_graph-afe0095c9d83b978)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test1 ... ok
[INFO] [stdout] test test2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_save.rs (/opt/rustwide/target/debug/deps/test_save-1f47d61272fda9ca)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test1 ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test1 stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test1' (21) panicked at src/serialize.rs:34:56:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5d49ef10f6fa - std[ec4e911328de40a6]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5d49ef10f6fa - std[ec4e911328de40a6]::backtrace_rs::backtrace::trace_unsynchronized::<std[ec4e911328de40a6]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5d49ef10f6fa - std[ec4e911328de40a6]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5d49ef10f6fa - <<std[ec4e911328de40a6]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a96a4c5c53f902a3]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5d49ef123b6a - <core[a96a4c5c53f902a3]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5d49ef123b6a - core[a96a4c5c53f902a3]::fmt::write
[INFO] [stdout]    6:     0x5d49ef113f82 - std[ec4e911328de40a6]::io::default_write_fmt::<alloc[c960326de6de28e6]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5d49ef113f82 - <alloc[c960326de6de28e6]::vec::Vec<u8> as std[ec4e911328de40a6]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5d49ef0ee5bf - <std[ec4e911328de40a6]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5d49ef0ee5bf - std[ec4e911328de40a6]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5d49ef107959 - std[ec4e911328de40a6]::panicking::default_hook
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5d49ef07d3dc - <alloc[c960326de6de28e6]::boxed::Box<dyn for<'a, 'b> core[a96a4c5c53f902a3]::ops::function::Fn<(&'a std[ec4e911328de40a6]::panic::PanicHookInfo<'b>,), Output = ()> + core[a96a4c5c53f902a3]::marker::Sync + core[a96a4c5c53f902a3]::marker::Send> as core[a96a4c5c53f902a3]::ops::function::Fn<(&std[ec4e911328de40a6]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x5d49ef07d3dc - test[30c43f9fd66fea90]::test_main_with_exit_callback::<test[30c43f9fd66fea90]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5d49ef107b12 - <alloc[c960326de6de28e6]::boxed::Box<dyn for<'a, 'b> core[a96a4c5c53f902a3]::ops::function::Fn<(&'a std[ec4e911328de40a6]::panic::PanicHookInfo<'b>,), Output = ()> + core[a96a4c5c53f902a3]::marker::Sync + core[a96a4c5c53f902a3]::marker::Send> as core[a96a4c5c53f902a3]::ops::function::Fn<(&std[ec4e911328de40a6]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x5d49ef107b12 - std[ec4e911328de40a6]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5d49ef0ee678 - std[ec4e911328de40a6]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5d49ef0e5ec9 - std[ec4e911328de40a6]::sys::backtrace::__rust_end_short_backtrace::<std[ec4e911328de40a6]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5d49ef0ef38d - __rustc[aa69f48705c57ca8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5d49ef1242fc - core[a96a4c5c53f902a3]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5d49ef124072 - core[a96a4c5c53f902a3]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x5d49ef06f58e - <core[a96a4c5c53f902a3]::result::Result<std[ec4e911328de40a6]::fs::File, std[ec4e911328de40a6]::io::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x5d49ef06f58e - <rs_graphs[91d2cc6178102d6d]::graph::Graph<alloc[c960326de6de28e6]::string::String>>::save
[INFO] [stdout]                                at /opt/rustwide/workdir/src/serialize.rs:34:56
[INFO] [stdout]   22:     0x5d49ef05fd46 - test_save[3f30c9e340449a60]::test1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/test_save.rs:42:11
[INFO] [stdout]   23:     0x5d49ef05efd7 - test_save[3f30c9e340449a60]::test1::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/test_save.rs:5:11
[INFO] [stdout]   24:     0x5d49ef062426 - <test_save[3f30c9e340449a60]::test1::{closure#0} as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5d49ef0714bb - <fn() -> core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::string::String> as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5d49ef0714bb - test[30c43f9fd66fea90]::__rust_begin_short_backtrace::<core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::string::String>, fn() -> core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::string::String>>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x5d49ef07deab - test[30c43f9fd66fea90]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x5d49ef07deab - <core[a96a4c5c53f902a3]::panic::unwind_safe::AssertUnwindSafe<test[30c43f9fd66fea90]::run_test_in_process::{closure#0}> as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   29:     0x5d49ef07deab - std[ec4e911328de40a6]::panicking::catch_unwind::do_call::<core[a96a4c5c53f902a3]::panic::unwind_safe::AssertUnwindSafe<test[30c43f9fd66fea90]::run_test_in_process::{closure#0}>, core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::string::String>>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:581:40
[INFO] [stdout]   30:     0x5d49ef07deab - std[ec4e911328de40a6]::panicking::catch_unwind::<core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::string::String>, core[a96a4c5c53f902a3]::panic::unwind_safe::AssertUnwindSafe<test[30c43f9fd66fea90]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:544:19
[INFO] [stdout]   31:     0x5d49ef07deab - std[ec4e911328de40a6]::panic::catch_unwind::<core[a96a4c5c53f902a3]::panic::unwind_safe::AssertUnwindSafe<test[30c43f9fd66fea90]::run_test_in_process::{closure#0}>, core[a96a4c5c53f902a3]::result::Result<(), alloc[c960326de6de28e6]::string::String>>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x5d49ef07deab - test[30c43f9fd66fea90]::run_test_in_process
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x5d49ef07deab - test[30c43f9fd66fea90]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x5d49ef0795c4 - test[30c43f9fd66fea90]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x5d49ef0795c4 - std[ec4e911328de40a6]::sys::backtrace::__rust_begin_short_backtrace::<test[30c43f9fd66fea90]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   36:     0x5d49ef080ab2 - std[ec4e911328de40a6]::thread::lifecycle::spawn_unchecked::<test[30c43f9fd66fea90]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   37:     0x5d49ef080ab2 - <core[a96a4c5c53f902a3]::panic::unwind_safe::AssertUnwindSafe<std[ec4e911328de40a6]::thread::lifecycle::spawn_unchecked<test[30c43f9fd66fea90]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   38:     0x5d49ef080ab2 - std[ec4e911328de40a6]::panicking::catch_unwind::do_call::<core[a96a4c5c53f902a3]::panic::unwind_safe::AssertUnwindSafe<std[ec4e911328de40a6]::thread::lifecycle::spawn_unchecked<test[30c43f9fd66fea90]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:581:40
[INFO] [stdout]   39:     0x5d49ef080ab2 - std[ec4e911328de40a6]::panicking::catch_unwind::<(), core[a96a4c5c53f902a3]::panic::unwind_safe::AssertUnwindSafe<std[ec4e911328de40a6]::thread::lifecycle::spawn_unchecked<test[30c43f9fd66fea90]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panicking.rs:544:19
[INFO] [stdout]   40:     0x5d49ef080ab2 - std[ec4e911328de40a6]::panic::catch_unwind::<core[a96a4c5c53f902a3]::panic::unwind_safe::AssertUnwindSafe<std[ec4e911328de40a6]::thread::lifecycle::spawn_unchecked<test[30c43f9fd66fea90]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x5d49ef080ab2 - std[ec4e911328de40a6]::thread::lifecycle::spawn_unchecked::<test[30c43f9fd66fea90]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   42:     0x5d49ef080ab2 - <std[ec4e911328de40a6]::thread::lifecycle::spawn_unchecked<test[30c43f9fd66fea90]::run_test::{closure#1}, ()>::{closure#1} as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x5d49ef10ecaf - <alloc[c960326de6de28e6]::boxed::Box<dyn core[a96a4c5c53f902a3]::ops::function::FnOnce<(), Output = ()> + core[a96a4c5c53f902a3]::marker::Send> as core[a96a4c5c53f902a3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   44:     0x5d49ef10ecaf - <std[ec4e911328de40a6]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/0abe69e6c16114311cc2700e972492e64d69c28f/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   45:     0x70820e145aa4 - <unknown>
[INFO] [stdout]   46:     0x70820e1d2a64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test1
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test test_save`
[INFO] running `Command { std: "docker" "inspect" "592ccd44740e4e09e3c54c2cb9183b28d92fa00b883e68e47a1d400bf363e270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "592ccd44740e4e09e3c54c2cb9183b28d92fa00b883e68e47a1d400bf363e270", kill_on_drop: false }`
[INFO] [stdout] 592ccd44740e4e09e3c54c2cb9183b28d92fa00b883e68e47a1d400bf363e270
