[INFO] fetching crate buffer_io 1.0.3... [INFO] testing buffer_io-1.0.3 against beta-2021-09-08 for beta-1.56-1 [INFO] extracting crate buffer_io 1.0.3 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate buffer_io 1.0.3 on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate buffer_io 1.0.3 [INFO] finished tweaking crates.io crate buffer_io 1.0.3 [INFO] tweaked toml for crates.io crate buffer_io 1.0.3 written to /workspace/builds/worker-3/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 56c78da53a9c207a2b574cb43f1874aebe30a68efc5320232a827af9c53ed50f [INFO] running `Command { std: "docker" "start" "-a" "56c78da53a9c207a2b574cb43f1874aebe30a68efc5320232a827af9c53ed50f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "56c78da53a9c207a2b574cb43f1874aebe30a68efc5320232a827af9c53ed50f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "56c78da53a9c207a2b574cb43f1874aebe30a68efc5320232a827af9c53ed50f", kill_on_drop: false }` [INFO] [stdout] 56c78da53a9c207a2b574cb43f1874aebe30a68efc5320232a827af9c53ed50f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4d659f0645f06563330ffe11cbcf8153b9e95423c1e894647ded29b57029e59b [INFO] running `Command { std: "docker" "start" "-a" "4d659f0645f06563330ffe11cbcf8153b9e95423c1e894647ded29b57029e59b", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling proc-macro2 v1.0.29 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.76 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling thiserror-impl v1.0.29 [INFO] [stderr] Compiling thiserror v1.0.29 [INFO] [stderr] Compiling buffer_io v1.0.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> src/lib.rs:211:21 [INFO] [stdout] | [INFO] [stdout] 211 | let mut b: u8 = 0; [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 11.54s [INFO] running `Command { std: "docker" "inspect" "4d659f0645f06563330ffe11cbcf8153b9e95423c1e894647ded29b57029e59b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d659f0645f06563330ffe11cbcf8153b9e95423c1e894647ded29b57029e59b", kill_on_drop: false }` [INFO] [stdout] 4d659f0645f06563330ffe11cbcf8153b9e95423c1e894647ded29b57029e59b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b5c8e6c7dff15c799228cd76dfec8772fb4f67d08e67b7fafe94e659330e0d83 [INFO] running `Command { std: "docker" "start" "-a" "b5c8e6c7dff15c799228cd76dfec8772fb4f67d08e67b7fafe94e659330e0d83", kill_on_drop: false }` [INFO] [stderr] Compiling buffer_io v1.0.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> src/lib.rs:211:21 [INFO] [stdout] | [INFO] [stdout] 211 | let mut b: u8 = 0; [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> src/lib.rs:211:21 [INFO] [stdout] | [INFO] [stdout] 211 | let mut b: u8 = 0; [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.70s [INFO] running `Command { std: "docker" "inspect" "b5c8e6c7dff15c799228cd76dfec8772fb4f67d08e67b7fafe94e659330e0d83", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b5c8e6c7dff15c799228cd76dfec8772fb4f67d08e67b7fafe94e659330e0d83", kill_on_drop: false }` [INFO] [stdout] b5c8e6c7dff15c799228cd76dfec8772fb4f67d08e67b7fafe94e659330e0d83 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] ffa9ccc65b7fa3fcc59050434a11ec9b97135c5bebe9784e16581535f0832c42 [INFO] running `Command { std: "docker" "start" "-a" "ffa9ccc65b7fa3fcc59050434a11ec9b97135c5bebe9784e16581535f0832c42", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: value assigned to `b` is never read [INFO] [stderr] --> src/lib.rs:211:21 [INFO] [stderr] | [INFO] [stderr] 211 | let mut b: u8 = 0; [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: `buffer_io` (lib) generated 1 warning [INFO] [stderr] warning: `buffer_io` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.19s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/buffer_io-ec0ad8c5d4ddc516) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::it_works ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests buffer_io [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" "ffa9ccc65b7fa3fcc59050434a11ec9b97135c5bebe9784e16581535f0832c42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ffa9ccc65b7fa3fcc59050434a11ec9b97135c5bebe9784e16581535f0832c42", kill_on_drop: false }` [INFO] [stdout] ffa9ccc65b7fa3fcc59050434a11ec9b97135c5bebe9784e16581535f0832c42