[INFO] cloning repository https://github.com/WanderHuang/rust_lang_learn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WanderHuang/rust_lang_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanderHuang%2Frust_lang_learn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanderHuang%2Frust_lang_learn'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 433836d1a9ba2d3f10909195d986afaf9650680e [INFO] checking WanderHuang/rust_lang_learn against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanderHuang%2Frust_lang_learn" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/WanderHuang/rust_lang_learn on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/WanderHuang/rust_lang_learn [INFO] finished tweaking git repo https://github.com/WanderHuang/rust_lang_learn [INFO] tweaked toml for git repo https://github.com/WanderHuang/rust_lang_learn written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/WanderHuang/rust_lang_learn already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root: [INFO] [stderr] package: /workspace/builds/worker-3-tc1/source/crates/wasm-cache/Cargo.toml [INFO] [stderr] workspace: /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded wasm-bindgen-test-macro v0.3.20 [INFO] [stderr] Downloaded wasm-bindgen-shared v0.2.70 [INFO] [stderr] Downloaded wasm-bindgen-macro v0.2.70 [INFO] [stderr] Downloaded wasm-bindgen-futures v0.4.20 [INFO] [stderr] Downloaded wasm-bindgen-test v0.3.20 [INFO] [stderr] Downloaded lru v0.6.5 [INFO] [stderr] Downloaded wasm-bindgen-macro-support v0.2.70 [INFO] [stderr] Downloaded wasm-bindgen-backend v0.2.70 [INFO] [stderr] Downloaded js-sys v0.3.47 [INFO] [stderr] Downloaded wasm-bindgen v0.2.70 [INFO] [stderr] Downloaded once_cell v1.7.0 [INFO] [stderr] Downloaded web-sys v0.3.47 [INFO] [stderr] Downloaded libc v0.2.86 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fca0f2743c31e089612bad6366ae05ff6fad7ab8771cf9d9ccd1138193348a4f [INFO] running `Command { std: "docker" "start" "-a" "fca0f2743c31e089612bad6366ae05ff6fad7ab8771cf9d9ccd1138193348a4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fca0f2743c31e089612bad6366ae05ff6fad7ab8771cf9d9ccd1138193348a4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fca0f2743c31e089612bad6366ae05ff6fad7ab8771cf9d9ccd1138193348a4f", kill_on_drop: false }` [INFO] [stdout] fca0f2743c31e089612bad6366ae05ff6fad7ab8771cf9d9ccd1138193348a4f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 207d49fbf05c099d372a5853b4bb4111e003919a5a6ef9a0ed1fd6c3fca47eda [INFO] running `Command { std: "docker" "start" "-a" "207d49fbf05c099d372a5853b4bb4111e003919a5a6ef9a0ed1fd6c3fca47eda", kill_on_drop: false }` [INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root: [INFO] [stderr] package: /opt/rustwide/workdir/crates/wasm-cache/Cargo.toml [INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling libc v0.2.86 [INFO] [stderr] Compiling syn v1.0.60 [INFO] [stderr] Compiling wasm-bindgen-shared v0.2.70 [INFO] [stderr] Checking once_cell v1.7.0 [INFO] [stderr] Checking regex-syntax v0.6.22 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking thread_local v1.1.3 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Checking termcolor v1.1.2 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Compiling bumpalo v3.6.1 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Compiling wasm-bindgen v0.2.70 [INFO] [stderr] Checking ahash v0.4.7 [INFO] [stderr] Compiling wasm-bindgen-test-macro v0.3.20 [INFO] [stderr] Checking scoped-tls v1.0.0 [INFO] [stderr] Checking hashbrown v0.9.1 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking colored v2.0.0 [INFO] [stderr] Checking lru v0.6.5 [INFO] [stderr] Checking regex v1.4.3 [INFO] [stderr] Checking env_logger v0.8.3 [INFO] [stderr] Checking test_lang v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/thread.rs:2:17 [INFO] [stdout] | [INFO] [stdout] 2 | use std::time::{self, Duration}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/thread.rs:2:17 [INFO] [stdout] | [INFO] [stdout] 2 | use std::time::{self, Duration}; [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] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling wasm-bindgen-backend v0.2.70 [INFO] [stderr] Compiling wasm-bindgen-macro-support v0.2.70 [INFO] [stderr] Compiling wasm-bindgen-macro v0.2.70 [INFO] [stderr] Checking js-sys v0.3.47 [INFO] [stderr] Checking console_error_panic_hook v0.1.6 [INFO] [stderr] Checking wasm-cache v0.1.0 (/opt/rustwide/workdir/crates/wasm-cache) [INFO] [stderr] Checking wasm-bindgen-futures v0.4.20 [INFO] [stderr] Checking wasm-bindgen-test v0.3.20 [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.67s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.70 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "207d49fbf05c099d372a5853b4bb4111e003919a5a6ef9a0ed1fd6c3fca47eda", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "207d49fbf05c099d372a5853b4bb4111e003919a5a6ef9a0ed1fd6c3fca47eda", kill_on_drop: false }` [INFO] [stdout] 207d49fbf05c099d372a5853b4bb4111e003919a5a6ef9a0ed1fd6c3fca47eda [INFO] checking WanderHuang/rust_lang_learn against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWanderHuang%2Frust_lang_learn" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/WanderHuang/rust_lang_learn on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/WanderHuang/rust_lang_learn [INFO] finished tweaking git repo https://github.com/WanderHuang/rust_lang_learn [INFO] tweaked toml for git repo https://github.com/WanderHuang/rust_lang_learn written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/WanderHuang/rust_lang_learn already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root: [INFO] [stderr] package: /workspace/builds/worker-3-tc2/source/crates/wasm-cache/Cargo.toml [INFO] [stderr] workspace: /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6c510e2117435f699646f39e9ddaab3a506d2732dba3ee13d09f6fcc8b871007 [INFO] running `Command { std: "docker" "start" "-a" "6c510e2117435f699646f39e9ddaab3a506d2732dba3ee13d09f6fcc8b871007", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6c510e2117435f699646f39e9ddaab3a506d2732dba3ee13d09f6fcc8b871007", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6c510e2117435f699646f39e9ddaab3a506d2732dba3ee13d09f6fcc8b871007", kill_on_drop: false }` [INFO] [stdout] 6c510e2117435f699646f39e9ddaab3a506d2732dba3ee13d09f6fcc8b871007 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 33d54fc6e118d61d1b0ba45871aabb927d7d9f42acacca10fe9bd0fc76240a8d [INFO] running `Command { std: "docker" "start" "-a" "33d54fc6e118d61d1b0ba45871aabb927d7d9f42acacca10fe9bd0fc76240a8d", kill_on_drop: false }` [INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root: [INFO] [stderr] package: /opt/rustwide/workdir/crates/wasm-cache/Cargo.toml [INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling libc v0.2.86 [INFO] [stderr] Compiling wasm-bindgen-shared v0.2.70 [INFO] [stderr] Compiling syn v1.0.60 [INFO] [stderr] Checking once_cell v1.7.0 [INFO] [stderr] Checking regex-syntax v0.6.22 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking thread_local v1.1.3 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling bumpalo v3.6.1 [INFO] [stderr] Checking termcolor v1.1.2 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Compiling wasm-bindgen v0.2.70 [INFO] [stderr] Checking ahash v0.4.7 [INFO] [stderr] Compiling wasm-bindgen-test-macro v0.3.20 [INFO] [stderr] Checking hashbrown v0.9.1 [INFO] [stderr] Checking scoped-tls v1.0.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking colored v2.0.0 [INFO] [stderr] Checking regex v1.4.3 [INFO] [stderr] Checking lru v0.6.5 [INFO] [stderr] Checking env_logger v0.8.3 [INFO] [stderr] Checking test_lang v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/thread.rs:2:17 [INFO] [stdout] | [INFO] [stdout] 2 | use std::time::{self, Duration}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/thread.rs:2:17 [INFO] [stdout] | [INFO] [stdout] 2 | use std::time::{self, Duration}; [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] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling wasm-bindgen-backend v0.2.70 [INFO] [stderr] Compiling wasm-bindgen-macro-support v0.2.70 [INFO] [stderr] Compiling wasm-bindgen-macro v0.2.70 [INFO] [stderr] Checking js-sys v0.3.47 [INFO] [stderr] Checking console_error_panic_hook v0.1.6 [INFO] [stderr] Checking wasm-cache v0.1.0 (/opt/rustwide/workdir/crates/wasm-cache) [INFO] [stderr] Checking wasm-bindgen-futures v0.4.20 [INFO] [stderr] Checking wasm-bindgen-test v0.3.20 [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.77s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.70 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "33d54fc6e118d61d1b0ba45871aabb927d7d9f42acacca10fe9bd0fc76240a8d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "33d54fc6e118d61d1b0ba45871aabb927d7d9f42acacca10fe9bd0fc76240a8d", kill_on_drop: false }` [INFO] [stdout] 33d54fc6e118d61d1b0ba45871aabb927d7d9f42acacca10fe9bd0fc76240a8d