[INFO] cloning repository https://github.com/valekar/rust-book [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/valekar/rust-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvalekar%2Frust-book", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvalekar%2Frust-book'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2eeae0ed967ea63e698198235aa39cf767ba7851 [INFO] testing valekar/rust-book against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvalekar%2Frust-book" "/workspace/builds/worker-36/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-36/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/valekar/rust-book 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/valekar/rust-book [INFO] finished tweaking git repo https://github.com/valekar/rust-book [INFO] tweaked toml for git repo https://github.com/valekar/rust-book written to /workspace/builds/worker-36/source/Cargo.toml [INFO] crate git repo https://github.com/valekar/rust-book 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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 4d882113ad3d3553dcba85f0412d2ccf64da2acd2d84008323a024150d2a456e [INFO] running `Command { std: "docker" "start" "-a" "4d882113ad3d3553dcba85f0412d2ccf64da2acd2d84008323a024150d2a456e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4d882113ad3d3553dcba85f0412d2ccf64da2acd2d84008323a024150d2a456e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d882113ad3d3553dcba85f0412d2ccf64da2acd2d84008323a024150d2a456e", kill_on_drop: false }` [INFO] [stdout] 4d882113ad3d3553dcba85f0412d2ccf64da2acd2d84008323a024150d2a456e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 86c3e8570727b098c896d223482145820744afa8474a230aded7fe7087e0d3fd [INFO] running `Command { std: "docker" "start" "-a" "86c3e8570727b098c896d223482145820744afa8474a230aded7fe7087e0d3fd", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.98 [INFO] [stderr] Compiling chap-3 v0.1.0 (/opt/rustwide/workdir/chap-3) [INFO] [stderr] Compiling chap-1 v0.1.0 (/opt/rustwide/workdir/chap-1) [INFO] [stderr] Compiling chap-4 v0.1.0 (/opt/rustwide/workdir/chap-4) [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> chap-4/src/main.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let s3 = &mut s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s4` [INFO] [stdout] --> chap-4/src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let s4 = &mut s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s4` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling chap-2 v0.1.0 (/opt/rustwide/workdir/chap-2) [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> chap-2/src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 40.84s [INFO] running `Command { std: "docker" "inspect" "86c3e8570727b098c896d223482145820744afa8474a230aded7fe7087e0d3fd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "86c3e8570727b098c896d223482145820744afa8474a230aded7fe7087e0d3fd", kill_on_drop: false }` [INFO] [stdout] 86c3e8570727b098c896d223482145820744afa8474a230aded7fe7087e0d3fd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 52a402735abfb5956ba43cbbd46c66f9ad9a8791559af231527991aa9aac6ff6 [INFO] running `Command { std: "docker" "start" "-a" "52a402735abfb5956ba43cbbd46c66f9ad9a8791559af231527991aa9aac6ff6", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling chap-1 v0.1.0 (/opt/rustwide/workdir/chap-1) [INFO] [stderr] Compiling chap-4 v0.1.0 (/opt/rustwide/workdir/chap-4) [INFO] [stderr] Compiling chap-3 v0.1.0 (/opt/rustwide/workdir/chap-3) [INFO] [stderr] Compiling chap-2 v0.1.0 (/opt/rustwide/workdir/chap-2) [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> chap-2/src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> chap-4/src/main.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let s3 = &mut s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s4` [INFO] [stdout] --> chap-4/src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let s4 = &mut s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s4` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.75s [INFO] running `Command { std: "docker" "inspect" "52a402735abfb5956ba43cbbd46c66f9ad9a8791559af231527991aa9aac6ff6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "52a402735abfb5956ba43cbbd46c66f9ad9a8791559af231527991aa9aac6ff6", kill_on_drop: false }` [INFO] [stdout] 52a402735abfb5956ba43cbbd46c66f9ad9a8791559af231527991aa9aac6ff6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] bd307648962a16689782645f0b1169e8e8eb3d28a3192ccebc2ae5e77da2be98 [INFO] running `Command { std: "docker" "start" "-a" "bd307648962a16689782645f0b1169e8e8eb3d28a3192ccebc2ae5e77da2be98", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused variable: `s3` [INFO] [stderr] --> chap-4/src/main.rs:13:9 [INFO] [stderr] | [INFO] [stderr] 13 | let s3 = &mut s1; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s4` [INFO] [stderr] --> chap-4/src/main.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | let s4 = &mut s1; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_s4` [INFO] [stderr] [INFO] [stderr] warning: `chap-4` (bin "chap-4" test) generated 2 warnings [INFO] [stderr] warning: unused import: `std::error::Error` [INFO] [stderr] --> chap-2/src/main.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::error::Error; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `chap-2` (bin "chap-2" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 4.62s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chap_1-a749fb0b797dcf43) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chap_2-090c232e21f69db0) [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chap_3-ef17d9ef48cd0c70) [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] [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] [stderr] Running unittests (/opt/rustwide/target/debug/deps/chap_4-266e708c4d212b80) [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] [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" "bd307648962a16689782645f0b1169e8e8eb3d28a3192ccebc2ae5e77da2be98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bd307648962a16689782645f0b1169e8e8eb3d28a3192ccebc2ae5e77da2be98", kill_on_drop: false }` [INFO] [stdout] bd307648962a16689782645f0b1169e8e8eb3d28a3192ccebc2ae5e77da2be98