[INFO] updating cached repository spacekookie/spaces
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/spacekookie/spaces
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/spacekookie/spaces" "work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/spaces"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/spaces'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/spacekookie/spaces" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/spacekookie/spaces"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/spacekookie/spaces'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9a37e72cc44957b488d82a1574f74bab1c914387
[INFO] sha for GitHub repo spacekookie/spaces: 9a37e72cc44957b488d82a1574f74bab1c914387
[INFO] validating manifest of spacekookie/spaces on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of spacekookie/spaces on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing spacekookie/spaces
[INFO] finished frobbing spacekookie/spaces
[INFO] frobbed toml for spacekookie/spaces written to work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/spaces/Cargo.toml
[INFO] started frobbing spacekookie/spaces
[INFO] finished frobbing spacekookie/spaces
[INFO] frobbed toml for spacekookie/spaces written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/spacekookie/spaces/Cargo.toml
[INFO] crate spacekookie/spaces already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing spacekookie/spaces against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/spaces:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0137ea94a9cb7a61c72f63025e1137b5b748b8a8425e1b708ba2262d368576b5
[INFO] running `"docker" "start" "-a" "0137ea94a9cb7a61c72f63025e1137b5b748b8a8425e1b708ba2262d368576b5"`
[INFO] [stderr]    Compiling toml v0.4.8
[INFO] [stderr]    Compiling i3ipc v0.8.4
[INFO] [stderr]    Compiling spaces v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `i3ipc::*`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use i3ipc::*;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:14:14
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let (x, _) = Rhombus::rel_position(i);
[INFO] [stderr]    |              ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `items`
[INFO] [stderr]   --> src/layout.rs:41:26
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn layout(&self, items: Vec<String>) -> Vec<Block> {
[INFO] [stderr]    |                          ^^^^^ help: consider prefixing with an underscore: `_items`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/layout/rhombus.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |         for i in 0..=len {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/workspaces.rs:13:47
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn set_workspace(conn: &mut I3Connection, name: &String) {
[INFO] [stderr]    |                                               ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]   --> src/layout/rhombus.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn x(gen: u64, index: u64) -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `y`
[INFO] [stderr]   --> src/layout/rhombus.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn y(index: u64) -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Shape`
[INFO] [stderr]   --> src/layout.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub enum Shape {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Layout`
[INFO] [stderr]   --> src/layout.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub struct Layout {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Block`
[INFO] [stderr]   --> src/layout.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct Block {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/layout.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn new(shape: Shape, offset: (i64, i64)) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `layout`
[INFO] [stderr]   --> src/layout.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn layout(&self, items: Vec<String>) -> Vec<Block> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_workspaces`
[INFO] [stderr]  --> src/workspaces.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn get_workspaces(conn: &mut I3Connection) -> Vec<String> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_workspace`
[INFO] [stderr]   --> src/workspaces.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn set_workspace(conn: &mut I3Connection, name: &String) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.31s
[INFO] running `"docker" "inspect" "0137ea94a9cb7a61c72f63025e1137b5b748b8a8425e1b708ba2262d368576b5"`
[INFO] running `"docker" "rm" "-f" "0137ea94a9cb7a61c72f63025e1137b5b748b8a8425e1b708ba2262d368576b5"`
[INFO] [stdout] 0137ea94a9cb7a61c72f63025e1137b5b748b8a8425e1b708ba2262d368576b5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/spaces:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a9735959323abb1d7f0f426c174ac412a13608c12b062bb681131f4c4021a572
[INFO] running `"docker" "start" "-a" "a9735959323abb1d7f0f426c174ac412a13608c12b062bb681131f4c4021a572"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling spaces v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `i3ipc::*`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use i3ipc::*;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:14:14
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let (x, _) = Rhombus::rel_position(i);
[INFO] [stderr]    |              ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `items`
[INFO] [stderr]   --> src/layout.rs:41:26
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn layout(&self, items: Vec<String>) -> Vec<Block> {
[INFO] [stderr]    |                          ^^^^^ help: consider prefixing with an underscore: `_items`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/layout/rhombus.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |         for i in 0..=len {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/workspaces.rs:13:47
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn set_workspace(conn: &mut I3Connection, name: &String) {
[INFO] [stderr]    |                                               ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]   --> src/layout/rhombus.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn x(gen: u64, index: u64) -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `y`
[INFO] [stderr]   --> src/layout/rhombus.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn y(index: u64) -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Shape`
[INFO] [stderr]   --> src/layout.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub enum Shape {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Layout`
[INFO] [stderr]   --> src/layout.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub struct Layout {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Block`
[INFO] [stderr]   --> src/layout.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct Block {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/layout.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn new(shape: Shape, offset: (i64, i64)) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `layout`
[INFO] [stderr]   --> src/layout.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn layout(&self, items: Vec<String>) -> Vec<Block> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_workspaces`
[INFO] [stderr]  --> src/workspaces.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn get_workspaces(conn: &mut I3Connection) -> Vec<String> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_workspace`
[INFO] [stderr]   --> src/workspaces.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn set_workspace(conn: &mut I3Connection, name: &String) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "a9735959323abb1d7f0f426c174ac412a13608c12b062bb681131f4c4021a572"`
[INFO] running `"docker" "rm" "-f" "a9735959323abb1d7f0f426c174ac412a13608c12b062bb681131f4c4021a572"`
[INFO] [stdout] a9735959323abb1d7f0f426c174ac412a13608c12b062bb681131f4c4021a572
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/spacekookie/spaces:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 6620e2bbc7b265eec8a194e8a23ee916d1c4a0ae75315ec0c8913cd7e8eb9675
[INFO] running `"docker" "start" "-a" "6620e2bbc7b265eec8a194e8a23ee916d1c4a0ae75315ec0c8913cd7e8eb9675"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/spaces-dad41cdd02bc961c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test layout::rhombus::generations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "6620e2bbc7b265eec8a194e8a23ee916d1c4a0ae75315ec0c8913cd7e8eb9675"`
[INFO] running `"docker" "rm" "-f" "6620e2bbc7b265eec8a194e8a23ee916d1c4a0ae75315ec0c8913cd7e8eb9675"`
[INFO] [stdout] 6620e2bbc7b265eec8a194e8a23ee916d1c4a0ae75315ec0c8913cd7e8eb9675