[INFO] updating cached repository https://github.com/LironHazan/rusty-playground
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5d4231ec3716e4229c064f306e66030e78d3bfd4
[INFO] testing LironHazan/rusty-playground against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLironHazan%2Frusty-playground" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LironHazan/rusty-playground on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-5/source/Cargo.toml
[INFO] crate git repo https://github.com/LironHazan/rusty-playground already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7d283ede2150d4735dd4295e0a25b54ec8fa1e071005224be259a67ccf75fcaf
[INFO] running `"docker" "start" "-a" "7d283ede2150d4735dd4295e0a25b54ec8fa1e071005224be259a67ccf75fcaf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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] [stderr] warning: unused import: `rand::random`
[INFO] [stderr]   --> src/basics.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     use rand::random;
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foo`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     for foo in ll { // LinkedList implements iterator
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `biss`
[INFO] [stderr]   --> src/structs_and_enums.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let biss = Animal::Dog;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_biss`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chuk`
[INFO] [stderr]   --> src/structs_and_enums.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let chuk = Animal::Cat;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_chuk`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_ownwership_sum`
[INFO] [stderr]  --> src/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: variant is never constructed: `Dog`
[INFO] [stderr]   --> src/structs_and_enums.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Dog,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cat`
[INFO] [stderr]   --> src/structs_and_enums.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Cat,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cow`
[INFO] [stderr]   --> src/structs_and_enums.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Cow,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Other`
[INFO] [stderr]   --> src/structs_and_enums.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     Other(u32)
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Baz`
[INFO] [stderr]   --> src/structs_and_enums.rs:21:6
[INFO] [stderr]    |
[INFO] [stderr] 21 | enum Baz {
[INFO] [stderr]    |      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_sound`
[INFO] [stderr]   --> src/structs_and_enums.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn make_sound() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.43s
[INFO] running `"docker" "inspect" "7d283ede2150d4735dd4295e0a25b54ec8fa1e071005224be259a67ccf75fcaf"`
[INFO] running `"docker" "rm" "-f" "7d283ede2150d4735dd4295e0a25b54ec8fa1e071005224be259a67ccf75fcaf"`
[INFO] [stdout] 7d283ede2150d4735dd4295e0a25b54ec8fa1e071005224be259a67ccf75fcaf
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 84bcc14e84b35af8a7a41b7b27f03ecc9a1920e43340cadd213fb9d8d37e5b37
[INFO] running `"docker" "start" "-a" "84bcc14e84b35af8a7a41b7b27f03ecc9a1920e43340cadd213fb9d8d37e5b37"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rusty-playgraound v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `rand::random`
[INFO] [stderr]   --> src/basics.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     use rand::random;
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foo`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     for foo in ll { // LinkedList implements iterator
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `biss`
[INFO] [stderr]   --> src/structs_and_enums.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let biss = Animal::Dog;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_biss`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chuk`
[INFO] [stderr]   --> src/structs_and_enums.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let chuk = Animal::Cat;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_chuk`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_ownwership_sum`
[INFO] [stderr]  --> src/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: variant is never constructed: `Dog`
[INFO] [stderr]   --> src/structs_and_enums.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Dog,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cat`
[INFO] [stderr]   --> src/structs_and_enums.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Cat,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cow`
[INFO] [stderr]   --> src/structs_and_enums.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Cow,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Other`
[INFO] [stderr]   --> src/structs_and_enums.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     Other(u32)
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Baz`
[INFO] [stderr]   --> src/structs_and_enums.rs:21:6
[INFO] [stderr]    |
[INFO] [stderr] 21 | enum Baz {
[INFO] [stderr]    |      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_sound`
[INFO] [stderr]   --> src/structs_and_enums.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn make_sound() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "84bcc14e84b35af8a7a41b7b27f03ecc9a1920e43340cadd213fb9d8d37e5b37"`
[INFO] running `"docker" "rm" "-f" "84bcc14e84b35af8a7a41b7b27f03ecc9a1920e43340cadd213fb9d8d37e5b37"`
[INFO] [stdout] 84bcc14e84b35af8a7a41b7b27f03ecc9a1920e43340cadd213fb9d8d37e5b37
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f614dc74a228c6be199211422b3ba33f286b4ebb0dd49b5ba6787ef58b96c57b
[INFO] running `"docker" "start" "-a" "f614dc74a228c6be199211422b3ba33f286b4ebb0dd49b5ba6787ef58b96c57b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `rand::random`
[INFO] [stderr]   --> src/basics.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     use rand::random;
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foo`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     for foo in ll { // LinkedList implements iterator
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `biss`
[INFO] [stderr]   --> src/structs_and_enums.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let biss = Animal::Dog;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_biss`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chuk`
[INFO] [stderr]   --> src/structs_and_enums.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let chuk = Animal::Cat;
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_chuk`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_ownwership_sum`
[INFO] [stderr]  --> src/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: variant is never constructed: `Dog`
[INFO] [stderr]   --> src/structs_and_enums.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Dog,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cat`
[INFO] [stderr]   --> src/structs_and_enums.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Cat,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cow`
[INFO] [stderr]   --> src/structs_and_enums.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Cow,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Other`
[INFO] [stderr]   --> src/structs_and_enums.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     Other(u32)
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Baz`
[INFO] [stderr]   --> src/structs_and_enums.rs:21:6
[INFO] [stderr]    |
[INFO] [stderr] 21 | enum Baz {
[INFO] [stderr]    |      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_sound`
[INFO] [stderr]   --> src/structs_and_enums.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn make_sound() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rusty_playgraound-a66c644bf5300c93
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f614dc74a228c6be199211422b3ba33f286b4ebb0dd49b5ba6787ef58b96c57b"`
[INFO] running `"docker" "rm" "-f" "f614dc74a228c6be199211422b3ba33f286b4ebb0dd49b5ba6787ef58b96c57b"`
[INFO] [stdout] f614dc74a228c6be199211422b3ba33f286b4ebb0dd49b5ba6787ef58b96c57b