[INFO] cloning repository https://github.com/lmnzx/pi-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lmnzx/pi-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmnzx%2Fpi-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmnzx%2Fpi-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca03a9ce44169e34d1b1cdb8bf4ad483635780f1
[INFO] testing lmnzx/pi-tree against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmnzx%2Fpi-tree" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lmnzx/pi-tree
[INFO] finished tweaking git repo https://github.com/lmnzx/pi-tree
[INFO] tweaked toml for git repo https://github.com/lmnzx/pi-tree written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lmnzx/pi-tree on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lmnzx/pi-tree 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" "+1.99.0-beta.1" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f
[INFO] running `Command { std: "docker" "start" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling cc v1.1.0
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.70
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]    Compiling stacker v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling serde_stacker v0.1.11
[INFO] [stderr]    Compiling pi-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 18 |     fn new(id: usize) -> Arc<Node> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Tree {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `generate`, `traverse`, `save_to_file`, `load_from_file`, and `rebuild_parent_links` are never used
[INFO] [stdout]    --> src/lib.rs:33:8
[INFO] [stdout]     |
[INFO] [stdout]  32 | impl Tree {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  33 |     fn new() -> Tree {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  37 |     fn generate(&mut self, depth: usize) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  79 |     fn traverse(&self) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  93 |     fn save_to_file(&self, filename: &str) -> std::io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn load_from_file(filename: &str) -> std::io::Result<Self> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     fn rebuild_parent_links(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pi_digits` is never used
[INFO] [stdout]    --> src/lib.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn pi_digits() -> impl Iterator<Item = usize> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 10.27s
[INFO] running `Command { std: "docker" "inspect" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 18 |     fn new(id: usize) -> Arc<Node> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Tree {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `generate`, `traverse`, `save_to_file`, `load_from_file`, and `rebuild_parent_links` are never used
[INFO] [stdout]    --> src/lib.rs:33:8
[INFO] [stdout]     |
[INFO] [stdout]  32 | impl Tree {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  33 |     fn new() -> Tree {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  37 |     fn generate(&mut self, depth: usize) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  79 |     fn traverse(&self) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  93 |     fn save_to_file(&self, filename: &str) -> std::io::Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn load_from_file(filename: &str) -> std::io::Result<Self> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     fn rebuild_parent_links(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pi_digits` is never used
[INFO] [stdout]    --> src/lib.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn pi_digits() -> impl Iterator<Item = usize> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pi-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Node` is never constructed
[INFO] [stderr]   --> src/lib.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct Node {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/lib.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl Node {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] 18 |     fn new(id: usize) -> Arc<Node> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Tree` is never constructed
[INFO] [stderr]   --> src/lib.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | struct Tree {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `generate`, `traverse`, `save_to_file`, `load_from_file`, and `rebuild_parent_links` are never used
[INFO] [stderr]    --> src/lib.rs:33:8
[INFO] [stderr]     |
[INFO] [stderr]  32 | impl Tree {
[INFO] [stderr]     | --------- associated items in this implementation
[INFO] [stderr]  33 |     fn new() -> Tree {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr]  37 |     fn generate(&mut self, depth: usize) {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  79 |     fn traverse(&self) -> Vec<usize> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  93 |     fn save_to_file(&self, filename: &str) -> std::io::Result<()> {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |     fn load_from_file(filename: &str) -> std::io::Result<Self> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |     fn rebuild_parent_links(&self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `pi_digits` is never used
[INFO] [stderr]    --> src/lib.rs:122:4
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn pi_digits() -> impl Iterator<Item = usize> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `pi-tree` (lib) generated 5 warnings
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/pi_tree-46ec0634e8b7be34)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::tree_rebuild_parent ... ok
[INFO] [stdout] test tests::tree_generation ... ok
[INFO] [stdout] test tests::tree_traversal ... ok
[INFO] [stdout] test tests::tree_save_load ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::tree_save_load stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::tree_save_load' (420) panicked at src/lib.rs:162:14:
[INFO] [stdout] Failed to save tree to file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5ec885592671 - <<std[104cf6e2632825ea]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[7c831bd917ebf35f]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5ec8855a69ca - core[7c831bd917ebf35f]::fmt::write
[INFO] [stdout]    2:     0x5ec885596b0c - <alloc[2fdc3f7464fcf288]::vec::Vec<u8> as core[7c831bd917ebf35f]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5ec88556eb76 - std[104cf6e2632825ea]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5ec88558aca9 - std[104cf6e2632825ea]::panicking::default_hook
[INFO] [stdout]    5:     0x5ec885527080 - test[73009c9f9aebf890]::test_main_inner::<test[73009c9f9aebf890]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5ec88558ae62 - std[104cf6e2632825ea]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5ec88556ec22 - std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5ec885567519 - std[104cf6e2632825ea]::sys::backtrace::__rust_end_short_backtrace::<std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5ec88556f81d - __rustc[b0d56fa5b193ad05]::rust_begin_unwind
[INFO] [stdout]   10:     0x5ec8855a712c - core[7c831bd917ebf35f]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5ec8855a6f02 - core[7c831bd917ebf35f]::result::unwrap_failed
[INFO] [stdout]   12:     0x5ec885519269 - <pi_tree[4bc97dd62438dec9]::tests::tree_save_load::{closure#0} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   13:     0x5ec88551a36b - test[73009c9f9aebf890]::__rust_begin_short_backtrace::<core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>, fn() -> core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>>
[INFO] [stdout]   14:     0x5ec8855279d5 - test[73009c9f9aebf890]::run_test::{closure#0}
[INFO] [stdout]   15:     0x5ec885520d94 - std[104cf6e2632825ea]::sys::backtrace::__rust_begin_short_backtrace::<test[73009c9f9aebf890]::run_test::{closure#1}, ()>
[INFO] [stdout]   16:     0x5ec88552ab32 - <std[104cf6e2632825ea]::thread::lifecycle::spawn_unchecked<test[73009c9f9aebf890]::run_test::{closure#1}, ()>::{closure#1} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   17:     0x5ec885591f49 - <std[104cf6e2632825ea]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   18:     0x73677862107a - <unknown>
[INFO] [stdout]   19:     0x7367786b4534 - clone
[INFO] [stdout]   20:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::tree_save_load
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f", kill_on_drop: false }`
[INFO] [stdout] e2d37f009287d24668bfbe5b8be0da0858923732efa9bf043d29bc7dc806da6f
