[INFO] cloning repository https://github.com/LironHazan/rusty-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LironHazan/rusty-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLironHazan%2Frusty-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLironHazan%2Frusty-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1ad54bf14f4bde13310a62f95c905848405f864
[INFO] testing LironHazan/rusty-playground against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLironHazan%2Frusty-playground" "/workspace/builds/worker-78/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-78/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LironHazan/rusty-playground on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LironHazan/rusty-playground
[INFO] finished tweaking git repo https://github.com/LironHazan/rusty-playground
[INFO] tweaked toml for git repo https://github.com/LironHazan/rusty-playground written to /workspace/builds/worker-78/source/Cargo.toml
[INFO] crate git repo https://github.com/LironHazan/rusty-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89c51e40db78303021fa280f3936ab32c5df8674ab99c9f2e806cf9c432e2ddb
[INFO] running `Command { std: "docker" "start" "-a" "89c51e40db78303021fa280f3936ab32c5df8674ab99c9f2e806cf9c432e2ddb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89c51e40db78303021fa280f3936ab32c5df8674ab99c9f2e806cf9c432e2ddb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89c51e40db78303021fa280f3936ab32c5df8674ab99c9f2e806cf9c432e2ddb", kill_on_drop: false }`
[INFO] [stdout] 89c51e40db78303021fa280f3936ab32c5df8674ab99c9f2e806cf9c432e2ddb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36703580848b3422a139902a50acc197c2afb420fb7ee07ee3d6d154d05fe58e
[INFO] running `Command { std: "docker" "start" "-a" "36703580848b3422a139902a50acc197c2afb420fb7ee07ee3d6d154d05fe58e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rusty-playgraound v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `lang_stuff::borrows::borrows::imperative_sum`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lang_stuff::borrows::borrows::imperative_sum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownwership_sum`
[INFO] [stdout]  --> src/lang_stuff/borrows.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn take_ownwership_sum(v: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `borrow_sum`
[INFO] [stdout]   --> src/lang_stuff/borrows.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn borrow_sum(v: &Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `imperative_sum`
[INFO] [stdout]   --> src/lang_stuff/borrows.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn imperative_sum() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_noises`
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn make_noises(animals: Vec<Box<dyn NoisyAnimal>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_noises_with_constraints`
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn make_noises_with_constraints<T: NoisyAnimal>(animal: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `call_make_noises`
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn call_make_noises() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.40s
[INFO] running `Command { std: "docker" "inspect" "36703580848b3422a139902a50acc197c2afb420fb7ee07ee3d6d154d05fe58e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36703580848b3422a139902a50acc197c2afb420fb7ee07ee3d6d154d05fe58e", kill_on_drop: false }`
[INFO] [stdout] 36703580848b3422a139902a50acc197c2afb420fb7ee07ee3d6d154d05fe58e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b00eed88cc52eff7e8b90aee1b9808d9038a8d1a3f7a02e3a513dce55f993894
[INFO] running `Command { std: "docker" "start" "-a" "b00eed88cc52eff7e8b90aee1b9808d9038a8d1a3f7a02e3a513dce55f993894", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty-playgraound v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `lang_stuff::borrows::borrows::imperative_sum`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lang_stuff::borrows::borrows::imperative_sum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownwership_sum`
[INFO] [stdout]  --> src/lang_stuff/borrows.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn take_ownwership_sum(v: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `borrow_sum`
[INFO] [stdout]   --> src/lang_stuff/borrows.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn borrow_sum(v: &Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `imperative_sum`
[INFO] [stdout]   --> src/lang_stuff/borrows.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn imperative_sum() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_noises`
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn make_noises(animals: Vec<Box<dyn NoisyAnimal>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_noises_with_constraints`
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn make_noises_with_constraints<T: NoisyAnimal>(animal: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `call_make_noises`
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn call_make_noises() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "b00eed88cc52eff7e8b90aee1b9808d9038a8d1a3f7a02e3a513dce55f993894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b00eed88cc52eff7e8b90aee1b9808d9038a8d1a3f7a02e3a513dce55f993894", kill_on_drop: false }`
[INFO] [stdout] b00eed88cc52eff7e8b90aee1b9808d9038a8d1a3f7a02e3a513dce55f993894
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 689b4fa11b167a8ad7e2bbc74dc563c2dd873838cde28bb0ef121593a7b3c5b2
[INFO] running `Command { std: "docker" "start" "-a" "689b4fa11b167a8ad7e2bbc74dc563c2dd873838cde28bb0ef121593a7b3c5b2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `lang_stuff::borrows::borrows::imperative_sum`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use lang_stuff::borrows::borrows::imperative_sum;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_ownwership_sum`
[INFO] [stderr]  --> src/lang_stuff/borrows.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 |     fn take_ownwership_sum(v: Vec<i32>) -> i32 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `borrow_sum`
[INFO] [stderr]   --> src/lang_stuff/borrows.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn borrow_sum(v: &Vec<i32>) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `imperative_sum`
[INFO] [stderr]   --> src/lang_stuff/borrows.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn imperative_sum() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_noises`
[INFO] [stderr]   --> src/lang_stuff/trait_obj.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn make_noises(animals: Vec<Box<dyn NoisyAnimal>>) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_noises_with_constraints`
[INFO] [stderr]   --> src/lang_stuff/trait_obj.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn make_noises_with_constraints<T: NoisyAnimal>(animal: T) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `call_make_noises`
[INFO] [stderr]   --> src/lang_stuff/trait_obj.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn call_make_noises() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty-playgraound` (bin "rusty-playgraound" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rusty_playgraound-accdcf6708489b76)
[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" "689b4fa11b167a8ad7e2bbc74dc563c2dd873838cde28bb0ef121593a7b3c5b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "689b4fa11b167a8ad7e2bbc74dc563c2dd873838cde28bb0ef121593a7b3c5b2", kill_on_drop: false }`
[INFO] [stdout] 689b4fa11b167a8ad7e2bbc74dc563c2dd873838cde28bb0ef121593a7b3c5b2