[INFO] cloning repository https://github.com/thomshib/RustPlayground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thomshib/RustPlayground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomshib%2FRustPlayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomshib%2FRustPlayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1fddb1f0d9dcd6ae92b9502881a89dcab99c1c8
[INFO] checking thomshib/RustPlayground against try#028201683a76a5cd349729c6819c46607119c4e8 for pr-144157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomshib%2FRustPlayground" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thomshib/RustPlayground
[INFO] finished tweaking git repo https://github.com/thomshib/RustPlayground
[INFO] tweaked toml for git repo https://github.com/thomshib/RustPlayground written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thomshib/RustPlayground on toolchain 028201683a76a5cd349729c6819c46607119c4e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thomshib/RustPlayground 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" "+028201683a76a5cd349729c6819c46607119c4e8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: bin.0.rand
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46d92aa34c61fead6dc1d5141c73e1f48874992e52c811e7a85e7b2653f503b2
[INFO] running `Command { std: "docker" "start" "-a" "46d92aa34c61fead6dc1d5141c73e1f48874992e52c811e7a85e7b2653f503b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46d92aa34c61fead6dc1d5141c73e1f48874992e52c811e7a85e7b2653f503b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46d92aa34c61fead6dc1d5141c73e1f48874992e52c811e7a85e7b2653f503b2", kill_on_drop: false }`
[INFO] [stdout] 46d92aa34c61fead6dc1d5141c73e1f48874992e52c811e7a85e7b2653f503b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 455a15a3440180eabbdaded63fc19cb0196d82977b8ab481ec9f2db967ab8cdd
[INFO] running `Command { std: "docker" "start" "-a" "455a15a3440180eabbdaded63fc19cb0196d82977b8ab481ec9f2db967ab8cdd", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: bin.0.rand
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking scratchpad v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:130:10
[INFO] [stdout]     |
[INFO] [stdout] 130 |         1...999 => "Unknown",
[INFO] [stdout]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `scratchpad` (bin "scratchpad"); 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/028201683a76a5cd349729c6819c46607119c4e8/bin/rustc --crate-name scratchpad --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=79d5154f3b37d5f3 -C extra-filename=-7bc73dee2df50b73 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern rand=/opt/rustwide/target/debug/deps/librand-007bf889f3830885.rmeta --cap-lints=forbid` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/main.rs:220:13
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let mut rng = rand::thread_rng();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:220:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let mut rng = rand::thread_rng();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Z` is never used
[INFO] [stdout]   --> src/main.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |  static mut Z:i32 = 42;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `data_types` is never used
[INFO] [stdout]   --> src/main.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |  fn data_types(){
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `operators` is never used
[INFO] [stdout]   --> src/main.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn operators(){
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_loop` is never used
[INFO] [stdout]    --> src/main.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn for_loop(){
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_statement` is never used
[INFO] [stdout]    --> src/main.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn match_statement(){
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `options` is never used
[INFO] [stdout]    --> src/main.rs:137:4
[INFO] [stdout]     |
[INFO] [stdout] 137 | fn options(){
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array` is never used
[INFO] [stdout]    --> src/main.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn array(){
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vectors` is never used
[INFO] [stdout]    --> src/main.rs:185:4
[INFO] [stdout]     |
[INFO] [stdout] 185 | fn vectors(){
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/sh.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Point {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `origin` is never used
[INFO] [stdout]   --> src/sh.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn origin() -> Point{
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `stack_and_heap` is never used
[INFO] [stdout]   --> src/sh.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn stack_and_heap(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/color.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum Color{
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enums` is never used
[INFO] [stdout]   --> src/color.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn enums(){
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slices_main` is never used
[INFO] [stdout]  --> src/slices.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn slices_main(){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_slices` is never used
[INFO] [stdout]   --> src/slices.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn use_slices(slice: &mut[i32]){
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strings` is never used
[INFO] [stdout]  --> src/strings.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn strings(){
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tuples` is never used
[INFO] [stdout]  --> src/tuples.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn tuples(){
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_and_product` is never used
[INFO] [stdout]   --> src/tuples.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn sum_and_product(x:i32, y: i32) -> (i32,i32){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increase_value` is never used
[INFO] [stdout]  --> src/func.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn increase_value(x: &mut i32){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `functions` is never used
[INFO] [stdout]   --> src/func.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn functions(){
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/meth.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]  --> src/meth.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Line{
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/meth.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Line{
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 12 |     fn len(&self) -> f64{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `methods` is never used
[INFO] [stdout]   --> src/meth.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn methods(){
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures` is never used
[INFO] [stdout]  --> src/clos.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn closures(){
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_even` is never used
[INFO] [stdout]  --> src/high.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn is_even(x: u32) ->bool{
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_order_functions` is never used
[INFO] [stdout]  --> src/high.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn higher_order_functions(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Animal` is never used
[INFO] [stdout]  --> src/trt.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | trait Animal {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Human` is never constructed
[INFO] [stdout]   --> src/trt.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Human{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]   --> src/trt.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Cat{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summable` is never used
[INFO] [stdout]   --> src/trt.rs:43:7
[INFO] [stdout]    |
[INFO] [stdout] 43 | trait Summable<T> {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traits` is never used
[INFO] [stdout]   --> src/trt.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn traits(){
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/deps/scratchpad-14d6da51cd6996de.d
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to write `/opt/rustwide/target/debug/.fingerprint/scratchpad-14d6da51cd6996de/dep-test-bin-scratchpad`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] running `Command { std: "docker" "inspect" "455a15a3440180eabbdaded63fc19cb0196d82977b8ab481ec9f2db967ab8cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455a15a3440180eabbdaded63fc19cb0196d82977b8ab481ec9f2db967ab8cdd", kill_on_drop: false }`
[INFO] [stdout] 455a15a3440180eabbdaded63fc19cb0196d82977b8ab481ec9f2db967ab8cdd