[INFO] cloning repository https://github.com/j6k4m8/magic-square
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/j6k4m8/magic-square" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj6k4m8%2Fmagic-square", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj6k4m8%2Fmagic-square'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c94075615e580a580f2683558cdc39c5ef4acb30
[INFO] checking j6k4m8/magic-square against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj6k4m8%2Fmagic-square" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/j6k4m8/magic-square on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/j6k4m8/magic-square
[INFO] finished tweaking git repo https://github.com/j6k4m8/magic-square
[INFO] tweaked toml for git repo https://github.com/j6k4m8/magic-square written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/j6k4m8/magic-square 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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "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] checking j6k4m8/magic-square against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj6k4m8%2Fmagic-square" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/j6k4m8/magic-square on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/j6k4m8/magic-square
[INFO] finished tweaking git repo https://github.com/j6k4m8/magic-square
[INFO] tweaked toml for git repo https://github.com/j6k4m8/magic-square written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/j6k4m8/magic-square 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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "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] checking j6k4m8/magic-square against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj6k4m8%2Fmagic-square" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/j6k4m8/magic-square on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/j6k4m8/magic-square
[INFO] finished tweaking git repo https://github.com/j6k4m8/magic-square
[INFO] tweaked toml for git repo https://github.com/j6k4m8/magic-square written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/j6k4m8/magic-square 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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07b726a12618e1e22035adb8dc0b53da9e1c11e7ec1cfbcf4c86af65e09fca7a
[INFO] running `Command { std: "docker" "start" "-a" "07b726a12618e1e22035adb8dc0b53da9e1c11e7ec1cfbcf4c86af65e09fca7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07b726a12618e1e22035adb8dc0b53da9e1c11e7ec1cfbcf4c86af65e09fca7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07b726a12618e1e22035adb8dc0b53da9e1c11e7ec1cfbcf4c86af65e09fca7a", kill_on_drop: false }`
[INFO] [stdout] 07b726a12618e1e22035adb8dc0b53da9e1c11e7ec1cfbcf4c86af65e09fca7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 053ce35ee0c919300f5f4780e8350c2c3b28f33dc3dd036b00e1e4ff0ed1edb1
[INFO] running `Command { std: "docker" "start" "-a" "053ce35ee0c919300f5f4780e8350c2c3b28f33dc3dd036b00e1e4ff0ed1edb1", kill_on_drop: false }`
[INFO] [stderr]     Checking magicsquare v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `dict`
[INFO] [stdout]    --> src/dictionary.rs:130:18
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn from_dict(dict: Dictionary) -> TemplateTree {
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_dict`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dict`
[INFO] [stdout]    --> src/dictionary.rs:130:18
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn from_dict(dict: Dictionary) -> TemplateTree {
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_dict`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]   --> src/main.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl MagicSquare {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn get(&self, row: usize, col: usize) -> char {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TemplateTreeNode` is never constructed
[INFO] [stdout]   --> src/dictionary.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | struct TemplateTreeNode {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TemplateTree` is never constructed
[INFO] [stdout]    --> src/dictionary.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | struct TemplateTree {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `matches` is never used
[INFO] [stdout]    --> src/dictionary.rs:108:19
[INFO] [stdout]     |
[INFO] [stdout] 107 | impl TemplateTreeNode {
[INFO] [stdout]     | --------------------- method in this implementation
[INFO] [stdout] 108 |     pub(crate) fn matches(&self, template: &str) -> bool {
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_dict` is never used
[INFO] [stdout]    --> src/dictionary.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 129 | impl TemplateTree {
[INFO] [stdout]     | ----------------- associated function in this implementation
[INFO] [stdout] 130 |     fn from_dict(dict: Dictionary) -> TemplateTree {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]   --> src/main.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl MagicSquare {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn get(&self, row: usize, col: usize) -> char {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TemplateTreeNode` is never constructed
[INFO] [stdout]   --> src/dictionary.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | struct TemplateTreeNode {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TemplateTree` is never constructed
[INFO] [stdout]    --> src/dictionary.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | struct TemplateTree {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `matches` is never used
[INFO] [stdout]    --> src/dictionary.rs:108:19
[INFO] [stdout]     |
[INFO] [stdout] 107 | impl TemplateTreeNode {
[INFO] [stdout]     | --------------------- method in this implementation
[INFO] [stdout] 108 |     pub(crate) fn matches(&self, template: &str) -> bool {
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_dict` is never used
[INFO] [stdout]    --> src/dictionary.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 129 | impl TemplateTree {
[INFO] [stdout]     | ----------------- associated function in this implementation
[INFO] [stdout] 130 |     fn from_dict(dict: Dictionary) -> TemplateTree {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "053ce35ee0c919300f5f4780e8350c2c3b28f33dc3dd036b00e1e4ff0ed1edb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "053ce35ee0c919300f5f4780e8350c2c3b28f33dc3dd036b00e1e4ff0ed1edb1", kill_on_drop: false }`
[INFO] [stdout] 053ce35ee0c919300f5f4780e8350c2c3b28f33dc3dd036b00e1e4ff0ed1edb1