[INFO] cloning repository https://github.com/flyingpenguin57/RustCollection
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flyingpenguin57/RustCollection" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflyingpenguin57%2FRustCollection", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflyingpenguin57%2FRustCollection'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2750dcdf64114459a05cccdcbc7d212ef966afd
[INFO] testing flyingpenguin57/RustCollection against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflyingpenguin57%2FRustCollection" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/flyingpenguin57/RustCollection
[INFO] finished tweaking git repo https://github.com/flyingpenguin57/RustCollection
[INFO] tweaked toml for git repo https://github.com/flyingpenguin57/RustCollection written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/flyingpenguin57/RustCollection on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/flyingpenguin57/RustCollection 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing flyingpenguin57/RustCollection against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflyingpenguin57%2FRustCollection" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/flyingpenguin57/RustCollection
[INFO] finished tweaking git repo https://github.com/flyingpenguin57/RustCollection
[INFO] tweaked toml for git repo https://github.com/flyingpenguin57/RustCollection written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/flyingpenguin57/RustCollection on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/flyingpenguin57/RustCollection 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0741678483f2acb22d8403c316d2dcce2a2df975ae3939ab196e0ff6da002879
[INFO] running `Command { std: "docker" "start" "-a" "0741678483f2acb22d8403c316d2dcce2a2df975ae3939ab196e0ff6da002879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0741678483f2acb22d8403c316d2dcce2a2df975ae3939ab196e0ff6da002879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0741678483f2acb22d8403c316d2dcce2a2df975ae3939ab196e0ff6da002879", kill_on_drop: false }`
[INFO] [stdout] 0741678483f2acb22d8403c316d2dcce2a2df975ae3939ab196e0ff6da002879
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27fd6caac7b95fd25f36a0e5be228a38dfcfebef103b4533c74a7042f23a8e4d
[INFO] running `Command { std: "docker" "start" "-a" "27fd6caac7b95fd25f36a0e5be228a38dfcfebef103b4533c74a7042f23a8e4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling RustCollection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/stack.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Node<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]  --> src/stack.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Stack<T> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/stack.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T: std::fmt::Display> Stack<T> {
[INFO] [stdout]    | ----------------------------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Stack<T> { Stack{len: 0,top: None} }
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 13 |
[INFO] [stdout] 14 |     pub fn push(&mut self, element: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn pop(&mut self) -> Option<Box<Node<T>>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustCollection` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_collection`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "27fd6caac7b95fd25f36a0e5be228a38dfcfebef103b4533c74a7042f23a8e4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27fd6caac7b95fd25f36a0e5be228a38dfcfebef103b4533c74a7042f23a8e4d", kill_on_drop: false }`
[INFO] [stdout] 27fd6caac7b95fd25f36a0e5be228a38dfcfebef103b4533c74a7042f23a8e4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32240ca374f3f7768fba1cf42f76dff6f8ca5b70345fd5d32a8eae6e81414660
[INFO] running `Command { std: "docker" "start" "-a" "32240ca374f3f7768fba1cf42f76dff6f8ca5b70345fd5d32a8eae6e81414660", kill_on_drop: false }`
[INFO] [stderr]    Compiling RustCollection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/stack.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Node<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]  --> src/stack.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Stack<T> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/stack.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<T: std::fmt::Display> Stack<T> {
[INFO] [stdout]    | ----------------------------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Stack<T> { Stack{len: 0,top: None} }
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 13 |
[INFO] [stdout] 14 |     pub fn push(&mut self, element: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn pop(&mut self) -> Option<Box<Node<T>>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustCollection` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_collection`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `result`
[INFO] [stdout]   --> src/lib.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 |     use std::{panic, result};
[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]   --> src/lib.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use crate::stack::{Node, Stack};
[INFO] [stdout]    |                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "32240ca374f3f7768fba1cf42f76dff6f8ca5b70345fd5d32a8eae6e81414660", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32240ca374f3f7768fba1cf42f76dff6f8ca5b70345fd5d32a8eae6e81414660", kill_on_drop: false }`
[INFO] [stdout] 32240ca374f3f7768fba1cf42f76dff6f8ca5b70345fd5d32a8eae6e81414660
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 04f2523054958d15bdae1acf57d9edeef3489190ee062f73d0a8a6db64822754
[INFO] running `Command { std: "docker" "start" "-a" "04f2523054958d15bdae1acf57d9edeef3489190ee062f73d0a8a6db64822754", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Node` is never constructed
[INFO] [stderr]  --> src/stack.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Node<T> {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Stack` is never constructed
[INFO] [stderr]  --> src/stack.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Stack<T> {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stderr]   --> src/stack.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl<T: std::fmt::Display> Stack<T> {
[INFO] [stderr]    | ----------------------------------- associated items in this implementation
[INFO] [stderr] 12 |     pub fn new() -> Stack<T> { Stack{len: 0,top: None} }
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 13 |
[INFO] [stderr] 14 |     pub fn push(&mut self, element: T) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 25 |     pub fn pop(&mut self) -> Option<Box<Node<T>>> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustCollection` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_collection`
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `RustCollection` (lib) generated 4 warnings
[INFO] [stderr] warning: unused import: `result`
[INFO] [stderr]   --> src/lib.rs:10:22
[INFO] [stderr]    |
[INFO] [stderr] 10 |     use std::{panic, result};
[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]   --> src/lib.rs:11:24
[INFO] [stderr]    |
[INFO] [stderr] 11 |     use crate::stack::{Node, Stack};
[INFO] [stderr]    |                        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/lib.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `RustCollection` (lib test) generated 3 warnings (run `cargo fix --lib -p RustCollection --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/RustCollection-e8e83929dfa3e1e7)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::stack_test_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests RustCollection
[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] running `Command { std: "docker" "inspect" "04f2523054958d15bdae1acf57d9edeef3489190ee062f73d0a8a6db64822754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04f2523054958d15bdae1acf57d9edeef3489190ee062f73d0a8a6db64822754", kill_on_drop: false }`
[INFO] [stdout] 04f2523054958d15bdae1acf57d9edeef3489190ee062f73d0a8a6db64822754
