[INFO] cloning repository https://github.com/yoshiioko/LearningRust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yoshiioko/LearningRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoshiioko%2FLearningRust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoshiioko%2FLearningRust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e349f2ae3bf2f1117833125afa55c0e25e32016a [INFO] testing yoshiioko/LearningRust against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoshiioko%2FLearningRust" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yoshiioko/LearningRust on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yoshiioko/LearningRust [INFO] finished tweaking git repo https://github.com/yoshiioko/LearningRust [INFO] tweaked toml for git repo https://github.com/yoshiioko/LearningRust written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/yoshiioko/LearningRust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", 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] 3f5f8cde56cd20e94fbc5729111512487c08420bd82e17f4407f8d38e18e143b [INFO] running `Command { std: "docker" "start" "-a" "3f5f8cde56cd20e94fbc5729111512487c08420bd82e17f4407f8d38e18e143b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3f5f8cde56cd20e94fbc5729111512487c08420bd82e17f4407f8d38e18e143b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3f5f8cde56cd20e94fbc5729111512487c08420bd82e17f4407f8d38e18e143b", kill_on_drop: false }` [INFO] [stdout] 3f5f8cde56cd20e94fbc5729111512487c08420bd82e17f4407f8d38e18e143b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--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] 0dcc8dae46d73ae8449cffa6db4c1385eff04c99530cfc40312ebb7816b5c34b [INFO] running `Command { std: "docker" "start" "-a" "0dcc8dae46d73ae8449cffa6db4c1385eff04c99530cfc40312ebb7816b5c34b", kill_on_drop: false }` [INFO] [stderr] Compiling learning-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable `a` is assigned to, but never used [INFO] [stdout] --> src/bin/3_variable_bindings.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let a; // declaration w/ no data type [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] = note: consider using `_a` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `a` is never read [INFO] [stdout] --> src/bin/3_variable_bindings.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | a = 5; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `b` is assigned to, but never used [INFO] [stdout] --> src/bin/3_variable_bindings.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let b: i8; // declaration w/ data type [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_b` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> src/bin/3_variable_bindings.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | b = 5; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/bin/3_variable_bindings.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let t = true; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/bin/3_variable_bindings.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let f: bool = false; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `z` is assigned to, but never used [INFO] [stdout] --> src/bin/3_variable_bindings.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let mut z = 5; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_z` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `z` is never read [INFO] [stdout] --> src/bin/3_variable_bindings.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | z = 6; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `N` [INFO] [stdout] --> src/bin/3_variable_bindings.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | const N: i32 = 5; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static is never used: `M` [INFO] [stdout] --> src/bin/3_variable_bindings.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | static M: i32 = 5; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.56s [INFO] running `Command { std: "docker" "inspect" "0dcc8dae46d73ae8449cffa6db4c1385eff04c99530cfc40312ebb7816b5c34b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0dcc8dae46d73ae8449cffa6db4c1385eff04c99530cfc40312ebb7816b5c34b", kill_on_drop: false }` [INFO] [stdout] 0dcc8dae46d73ae8449cffa6db4c1385eff04c99530cfc40312ebb7816b5c34b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] a2146e961e19ebb38ce3f139c9004ceb0665977be8f6112bd2d0e1b4a25a6f5a [INFO] running `Command { std: "docker" "start" "-a" "a2146e961e19ebb38ce3f139c9004ceb0665977be8f6112bd2d0e1b4a25a6f5a", kill_on_drop: false }` [INFO] [stderr] Compiling learning-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable `a` is assigned to, but never used [INFO] [stdout] --> src/bin/3_variable_bindings.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let a; // declaration w/ no data type [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] = note: consider using `_a` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `a` is never read [INFO] [stdout] --> src/bin/3_variable_bindings.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | a = 5; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `b` is assigned to, but never used [INFO] [stdout] --> src/bin/3_variable_bindings.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let b: i8; // declaration w/ data type [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_b` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> src/bin/3_variable_bindings.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | b = 5; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/bin/3_variable_bindings.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let t = true; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/bin/3_variable_bindings.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let f: bool = false; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `z` is assigned to, but never used [INFO] [stdout] --> src/bin/3_variable_bindings.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | let mut z = 5; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_z` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `z` is never read [INFO] [stdout] --> src/bin/3_variable_bindings.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | z = 6; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.81s [INFO] [stderr] Executable unittests src/bin/1_hello_world.rs (/opt/rustwide/target/debug/deps/1_hello_world-9d5e2369b35ead3e) [INFO] [stderr] Executable unittests src/bin/2_comments.rs (/opt/rustwide/target/debug/deps/2_comments-dd4753ccf88d131b) [INFO] [stderr] Executable unittests src/bin/3_variable_bindings.rs (/opt/rustwide/target/debug/deps/3_variable_bindings-c2d943c2ff1c1592) [INFO] running `Command { std: "docker" "inspect" "a2146e961e19ebb38ce3f139c9004ceb0665977be8f6112bd2d0e1b4a25a6f5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a2146e961e19ebb38ce3f139c9004ceb0665977be8f6112bd2d0e1b4a25a6f5a", kill_on_drop: false }` [INFO] [stdout] a2146e961e19ebb38ce3f139c9004ceb0665977be8f6112bd2d0e1b4a25a6f5a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] 1620771ef88a51ec862550aa622edc39c3d94395a5295089635b053ed43ccd9c [INFO] running `Command { std: "docker" "start" "-a" "1620771ef88a51ec862550aa622edc39c3d94395a5295089635b053ed43ccd9c", kill_on_drop: false }` [INFO] [stderr] warning: variable `a` is assigned to, but never used [INFO] [stdout] [INFO] [stderr] --> src/bin/3_variable_bindings.rs:7:9 [INFO] [stdout] running 0 tests [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] 7 | let a; // declaration w/ no data type [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] | ^ [INFO] [stdout] [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] = note: consider using `_a` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `a` is never read [INFO] [stderr] --> src/bin/3_variable_bindings.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | a = 5; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable `b` is assigned to, but never used [INFO] [stderr] --> src/bin/3_variable_bindings.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | let b: i8; // declaration w/ data type [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_b` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `b` is never read [INFO] [stderr] --> src/bin/3_variable_bindings.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | b = 5; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/bin/3_variable_bindings.rs:13:9 [INFO] [stderr] | [INFO] [stderr] 13 | let t = true; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/bin/3_variable_bindings.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let f: bool = false; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: variable `z` is assigned to, but never used [INFO] [stderr] --> src/bin/3_variable_bindings.rs:18:13 [INFO] [stderr] | [INFO] [stderr] 18 | let mut z = 5; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_z` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `z` is never read [INFO] [stderr] --> src/bin/3_variable_bindings.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | z = 6; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: `learning-rust` (bin "3_variable_bindings" test) generated 8 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/bin/1_hello_world.rs (/opt/rustwide/target/debug/deps/1_hello_world-9d5e2369b35ead3e) [INFO] [stderr] Running unittests src/bin/2_comments.rs (/opt/rustwide/target/debug/deps/2_comments-dd4753ccf88d131b) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stderr] Running unittests src/bin/3_variable_bindings.rs (/opt/rustwide/target/debug/deps/3_variable_bindings-c2d943c2ff1c1592) [INFO] [stdout] test tests::test_hello ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [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" "1620771ef88a51ec862550aa622edc39c3d94395a5295089635b053ed43ccd9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1620771ef88a51ec862550aa622edc39c3d94395a5295089635b053ed43ccd9c", kill_on_drop: false }` [INFO] [stdout] 1620771ef88a51ec862550aa622edc39c3d94395a5295089635b053ed43ccd9c