[INFO] cloning repository https://github.com/shanemikel/rust-hello [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shanemikel/rust-hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshanemikel%2Frust-hello", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshanemikel%2Frust-hello'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d473b3db08dbfe0ed83f428a13e337b242c04ce5 [INFO] testing shanemikel/rust-hello against beta-2020-07-24 for beta-1.46-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshanemikel%2Frust-hello" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/shanemikel/rust-hello on toolchain beta-2020-07-24 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/shanemikel/rust-hello [INFO] finished tweaking git repo https://github.com/shanemikel/rust-hello [INFO] tweaked toml for git repo https://github.com/shanemikel/rust-hello written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/shanemikel/rust-hello already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6fcb57a14284c83bdaab67ba7781f68c2889c160bdfda2deef5f2f209e987457 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "6fcb57a14284c83bdaab67ba7781f68c2889c160bdfda2deef5f2f209e987457", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6fcb57a14284c83bdaab67ba7781f68c2889c160bdfda2deef5f2f209e987457", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6fcb57a14284c83bdaab67ba7781f68c2889c160bdfda2deef5f2f209e987457", kill_on_drop: false }` [INFO] [stdout] 6fcb57a14284c83bdaab67ba7781f68c2889c160bdfda2deef5f2f209e987457 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1e6da02a7a60ecb4eb8b5ab737b9ebb9b362418fca82991aaf464a7bb39f9e61 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "1e6da02a7a60ecb4eb8b5ab737b9ebb9b362418fca82991aaf464a7bb39f9e61", kill_on_drop: false }` [INFO] [stderr] Compiling rust-hello v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::cell::RefCell` [INFO] [stdout] --> src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | use std::cell::RefCell; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Mutex` [INFO] [stdout] --> src/main.rs:9:26 [INFO] [stdout] | [INFO] [stdout] 9 | use std::sync::{Arc, Mutex, RwLock}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/main.rs:25:17 [INFO] [stdout] | [INFO] [stdout] 25 | let data = data.read().unwrap(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/list.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | Cons(T, Box>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> src/list.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/list.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn new() -> List { List::Nil } [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cons` [INFO] [stdout] --> src/list.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn cons(self, x: T) -> List { List::Cons(x, Box::new(self)) } [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `head` [INFO] [stdout] --> src/list.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn head(self) -> Option { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> src/list.rs:20:12 [INFO] [stdout] | [INFO] [stdout] 20 | pub fn tail(&self) -> Option<&List> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `head_ref` [INFO] [stdout] --> src/list.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | pub fn head_ref(&self) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `N` [INFO] [stdout] --> src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | const N: usize = 10; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `test_list` [INFO] [stdout] --> src/main.rs:39:4 [INFO] [stdout] | [INFO] [stdout] 39 | fn test_list() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.31s [INFO] running `Command { std: "docker" "inspect" "1e6da02a7a60ecb4eb8b5ab737b9ebb9b362418fca82991aaf464a7bb39f9e61", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e6da02a7a60ecb4eb8b5ab737b9ebb9b362418fca82991aaf464a7bb39f9e61", kill_on_drop: false }` [INFO] [stdout] 1e6da02a7a60ecb4eb8b5ab737b9ebb9b362418fca82991aaf464a7bb39f9e61 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] e3728bef9d0902808877a4580488b95c806f0dc028ccb52846481cc6cb0c61fc [INFO] running `Command { std: "docker" "start" "-a" "e3728bef9d0902808877a4580488b95c806f0dc028ccb52846481cc6cb0c61fc", kill_on_drop: false }` [INFO] [stderr] Compiling rust-hello v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::cell::RefCell` [INFO] [stdout] --> src/main.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | use std::cell::RefCell; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Mutex` [INFO] [stdout] --> src/main.rs:9:26 [INFO] [stdout] | [INFO] [stdout] 9 | use std::sync::{Arc, Mutex, RwLock}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `data` [INFO] [stdout] --> src/main.rs:25:17 [INFO] [stdout] | [INFO] [stdout] 25 | let data = data.read().unwrap(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/list.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | Cons(T, Box>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> src/list.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/list.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn new() -> List { List::Nil } [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cons` [INFO] [stdout] --> src/list.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn cons(self, x: T) -> List { List::Cons(x, Box::new(self)) } [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `head` [INFO] [stdout] --> src/list.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn head(self) -> Option { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> src/list.rs:20:12 [INFO] [stdout] | [INFO] [stdout] 20 | pub fn tail(&self) -> Option<&List> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `head_ref` [INFO] [stdout] --> src/list.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | pub fn head_ref(&self) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `N` [INFO] [stdout] --> src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | const N: usize = 10; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `test_list` [INFO] [stdout] --> src/main.rs:39:4 [INFO] [stdout] | [INFO] [stdout] 39 | fn test_list() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.54s [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "e3728bef9d0902808877a4580488b95c806f0dc028ccb52846481cc6cb0c61fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e3728bef9d0902808877a4580488b95c806f0dc028ccb52846481cc6cb0c61fc", kill_on_drop: false }` [INFO] [stdout] e3728bef9d0902808877a4580488b95c806f0dc028ccb52846481cc6cb0c61fc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 382400d77236cdb4e39ddd72b295549e6544f3099f173bb83e1186b8d388b6f4 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "382400d77236cdb4e39ddd72b295549e6544f3099f173bb83e1186b8d388b6f4", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `std::cell::RefCell` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | use std::cell::RefCell; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Mutex` [INFO] [stderr] --> src/main.rs:9:26 [INFO] [stderr] | [INFO] [stderr] 9 | use std::sync::{Arc, Mutex, RwLock}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `data` [INFO] [stderr] --> src/main.rs:25:17 [INFO] [stderr] | [INFO] [stderr] 25 | let data = data.read().unwrap(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_data` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Cons` [INFO] [stderr] --> src/list.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | Cons(T, Box>), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Nil` [INFO] [stderr] --> src/list.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | Nil, [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/list.rs:9:12 [INFO] [stderr] | [INFO] [stderr] 9 | pub fn new() -> List { List::Nil } [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `cons` [INFO] [stderr] --> src/list.rs:11:12 [INFO] [stderr] | [INFO] [stderr] 11 | pub fn cons(self, x: T) -> List { List::Cons(x, Box::new(self)) } [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `head` [INFO] [stderr] --> src/list.rs:13:12 [INFO] [stderr] | [INFO] [stderr] 13 | pub fn head(self) -> Option { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `tail` [INFO] [stderr] --> src/list.rs:20:12 [INFO] [stderr] | [INFO] [stderr] 20 | pub fn tail(&self) -> Option<&List> { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `head_ref` [INFO] [stderr] --> src/list.rs:29:12 [INFO] [stderr] | [INFO] [stderr] 29 | pub fn head_ref(&self) -> Option { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant is never used: `N` [INFO] [stderr] --> src/main.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | const N: usize = 10; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_list` [INFO] [stderr] --> src/main.rs:39:4 [INFO] [stderr] | [INFO] [stderr] 39 | fn test_list() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 12 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/rust_hello-9a215da349657864 [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 `Command { std: "docker" "inspect" "382400d77236cdb4e39ddd72b295549e6544f3099f173bb83e1186b8d388b6f4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "382400d77236cdb4e39ddd72b295549e6544f3099f173bb83e1186b8d388b6f4", kill_on_drop: false }` [INFO] [stdout] 382400d77236cdb4e39ddd72b295549e6544f3099f173bb83e1186b8d388b6f4