[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 1.98.0-beta.8+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-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lmnzx/pi-tree on toolchain 1.98.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.98.0-beta.8" "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" "+1.98.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_stacker v0.1.11
[INFO] [stderr]   Downloaded stacker v0.1.15
[INFO] [stderr]   Downloaded cc v1.1.0
[INFO] [stderr]   Downloaded psm v0.1.21
[INFO] [stderr]   Downloaded syn v2.0.70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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] 80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549
[INFO] running `Command { std: "docker" "start" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549", 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" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549", 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" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "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 12.28s
[INFO] running `Command { std: "docker" "inspect" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549", 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" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "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 0.90s
[INFO] running `Command { std: "docker" "inspect" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549", 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" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549" "/opt/rustwide/cargo-home/bin/cargo" "+1.98.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::tree_generation ... ok
[INFO] [stdout] test tests::tree_rebuild_parent ... 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' (440) 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:     0x5f8e88e80831 - <<std[97b98282bc616a66]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[832e9a552fc17241]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5f8e88e946aa - core[832e9a552fc17241]::fmt::write
[INFO] [stdout]    2:     0x5f8e88e84cec - <alloc[3ecab9f82c41dc7d]::vec::Vec<u8> as std[97b98282bc616a66]::io::Write>::write_fmt
[INFO] [stdout]    3:     0x5f8e88e5ee76 - std[97b98282bc616a66]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5f8e88e78979 - std[97b98282bc616a66]::panicking::default_hook
[INFO] [stdout]    5:     0x5f8e88e138c0 - test[39766f3d73431624]::test_main_inner::<test[39766f3d73431624]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5f8e88e78b32 - std[97b98282bc616a66]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5f8e88e5ef22 - std[97b98282bc616a66]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5f8e88e567c9 - std[97b98282bc616a66]::sys::backtrace::__rust_end_short_backtrace::<std[97b98282bc616a66]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5f8e88e5fb1d - __rustc[e3d8617bb01b7f69]::rust_begin_unwind
[INFO] [stdout]   10:     0x5f8e88e94e0c - core[832e9a552fc17241]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5f8e88e94be2 - core[832e9a552fc17241]::result::unwrap_failed
[INFO] [stdout]   12:     0x5f8e88e05ab8 - <pi_tree[ab46fdeae84107cb]::tests::tree_save_load::{closure#0} as core[832e9a552fc17241]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   13:     0x5f8e88e06bfb - test[39766f3d73431624]::__rust_begin_short_backtrace::<core[832e9a552fc17241]::result::Result<(), alloc[3ecab9f82c41dc7d]::string::String>, fn() -> core[832e9a552fc17241]::result::Result<(), alloc[3ecab9f82c41dc7d]::string::String>>
[INFO] [stdout]   14:     0x5f8e88e14245 - test[39766f3d73431624]::run_test::{closure#0}
[INFO] [stdout]   15:     0x5f8e88e0ecf4 - std[97b98282bc616a66]::sys::backtrace::__rust_begin_short_backtrace::<test[39766f3d73431624]::run_test::{closure#1}, ()>
[INFO] [stdout]   16:     0x5f8e88e17392 - <std[97b98282bc616a66]::thread::lifecycle::spawn_unchecked<test[39766f3d73431624]::run_test::{closure#1}, ()>::{closure#1} as core[832e9a552fc17241]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   17:     0x5f8e88e800bf - <std[97b98282bc616a66]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   18:     0x70319cf9507a - <unknown>
[INFO] [stdout]   19:     0x70319d028534 - 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] 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] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549", kill_on_drop: false }`
[INFO] [stdout] 80592bf3029c46e214ccccc026835ce7c8152d7a7fd78d9375781e475225f549
