[INFO] cloning repository https://github.com/brandonpollack23/rust_wc [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brandonpollack23/rust_wc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandonpollack23%2Frust_wc", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandonpollack23%2Frust_wc'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b94d313f8b8987d688f5598d96f55bde61892b80 [INFO] checking brandonpollack23/rust_wc against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandonpollack23%2Frust_wc" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/brandonpollack23/rust_wc on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/brandonpollack23/rust_wc [INFO] finished tweaking git repo https://github.com/brandonpollack23/rust_wc [INFO] tweaked toml for git repo https://github.com/brandonpollack23/rust_wc written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/brandonpollack23/rust_wc already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] b3aed0c37854b9ff54f2f1faa6651e84fe4efc8c5d5e893a5f2a7b195824a108 [INFO] running `Command { std: "docker" "start" "-a" "b3aed0c37854b9ff54f2f1faa6651e84fe4efc8c5d5e893a5f2a7b195824a108", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b3aed0c37854b9ff54f2f1faa6651e84fe4efc8c5d5e893a5f2a7b195824a108", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b3aed0c37854b9ff54f2f1faa6651e84fe4efc8c5d5e893a5f2a7b195824a108", kill_on_drop: false }` [INFO] [stdout] b3aed0c37854b9ff54f2f1faa6651e84fe4efc8c5d5e893a5f2a7b195824a108 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 35f389af86eb238c0089936a8bdfc9c8b4c3bd648f8dccb7b2fea2784436ccee [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" "35f389af86eb238c0089936a8bdfc9c8b4c3bd648f8dccb7b2fea2784436ccee", kill_on_drop: false }` [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking yaml-rust v0.3.5 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking clap v2.32.0 [INFO] [stderr] Checking rust_wc v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/word_count.rs:69:49 [INFO] [stdout] | [INFO] [stdout] 69 | fn open(path: &str) -> io::Result>> { [INFO] [stdout] | ^^^^ help: use `dyn`: `dyn Read` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/word_count.rs:69:49 [INFO] [stdout] | [INFO] [stdout] 69 | fn open(path: &str) -> io::Result>> { [INFO] [stdout] | ^^^^ help: use `dyn`: `dyn Read` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:35:13 [INFO] [stdout] | [INFO] [stdout] 35 | write!(&mut output, "{} ", self.lines); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | write!(&mut output, "{} ", self.words); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | write!(&mut output, "{} ", self.bytes); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | write!(&mut output, "{} ", self.chars); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:47:13 [INFO] [stdout] | [INFO] [stdout] 47 | write!(&mut output, "{} ", self.max_length); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:35:13 [INFO] [stdout] | [INFO] [stdout] 35 | write!(&mut output, "{} ", self.lines); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | write!(&mut output, "{} ", self.words); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | write!(&mut output, "{} ", self.bytes); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | write!(&mut output, "{} ", self.chars); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/word_count.rs:47:13 [INFO] [stdout] | [INFO] [stdout] 47 | write!(&mut output, "{} ", self.max_length); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.37s [INFO] running `Command { std: "docker" "inspect" "35f389af86eb238c0089936a8bdfc9c8b4c3bd648f8dccb7b2fea2784436ccee", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35f389af86eb238c0089936a8bdfc9c8b4c3bd648f8dccb7b2fea2784436ccee", kill_on_drop: false }` [INFO] [stdout] 35f389af86eb238c0089936a8bdfc9c8b4c3bd648f8dccb7b2fea2784436ccee