[INFO] cloning repository https://github.com/iyuroch/rust_word_counter [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iyuroch/rust_word_counter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiyuroch%2Frust_word_counter", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiyuroch%2Frust_word_counter'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 12ee883c7ff016ca88ac16f4d8e9fc7a7682612c [INFO] checking iyuroch/rust_word_counter against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiyuroch%2Frust_word_counter" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/iyuroch/rust_word_counter on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/iyuroch/rust_word_counter [INFO] finished tweaking git repo https://github.com/iyuroch/rust_word_counter [INFO] tweaked toml for git repo https://github.com/iyuroch/rust_word_counter written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/iyuroch/rust_word_counter already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded spmc v0.2.2 [INFO] [stderr] Downloaded chan v0.1.21 [INFO] [stderr] Downloaded crossbeam-epoch v0.5.0 [INFO] [stderr] Downloaded stable_deref_trait v1.1.0 [INFO] [stderr] Downloaded crossbeam-channel v0.2.2 [INFO] [stderr] Downloaded canal v0.1.3 [INFO] [stderr] Downloaded crossbeam-utils v0.4.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 25f76e6eed9a1ef2fab59437bcb82e72ca8f0866a2316abf0acd33085e9e3a98 [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" "25f76e6eed9a1ef2fab59437bcb82e72ca8f0866a2316abf0acd33085e9e3a98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "25f76e6eed9a1ef2fab59437bcb82e72ca8f0866a2316abf0acd33085e9e3a98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "25f76e6eed9a1ef2fab59437bcb82e72ca8f0866a2316abf0acd33085e9e3a98", kill_on_drop: false }` [INFO] [stdout] 25f76e6eed9a1ef2fab59437bcb82e72ca8f0866a2316abf0acd33085e9e3a98 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--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] 6c943e1abc8d52a601e6a1f81b47fd88a7a6ec61a708989e407133f983f3ae4f [INFO] running `Command { std: "docker" "start" "-a" "6c943e1abc8d52a601e6a1f81b47fd88a7a6ec61a708989e407133f983f3ae4f", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.42 [INFO] [stderr] Checking cfg-if v0.1.3 [INFO] [stderr] Checking lazy_static v1.0.1 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking stable_deref_trait v1.1.0 [INFO] [stderr] Checking smallvec v0.6.2 [INFO] [stderr] Compiling serde v1.0.66 [INFO] [stderr] Checking crossbeam-utils v0.4.1 [INFO] [stderr] Checking itoa v0.4.1 [INFO] [stderr] Checking dtoa v0.4.2 [INFO] [stderr] Checking spmc v0.2.2 [INFO] [stderr] Checking canal v0.1.3 [INFO] [stderr] Checking owning_ref v0.3.3 [INFO] [stderr] Checking crossbeam-utils v0.2.2 [INFO] [stderr] Compiling proc-macro2 v0.4.6 [INFO] [stderr] Checking crossbeam-epoch v0.5.0 [INFO] [stderr] Checking crossbeam-epoch v0.3.1 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Checking rand v0.5.4 [INFO] [stderr] Compiling quote v0.6.3 [INFO] [stderr] Checking crossbeam-deque v0.2.0 [INFO] [stderr] Compiling syn v0.14.2 [INFO] [stderr] Checking parking_lot_core v0.2.14 [INFO] [stderr] Checking rayon-core v1.4.0 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Checking chan v0.1.21 [INFO] [stderr] Checking parking_lot v0.5.5 [INFO] [stderr] Checking rayon v1.0.1 [INFO] [stderr] Checking crossbeam-channel v0.2.2 [INFO] [stderr] Compiling serde_derive v1.0.66 [INFO] [stderr] Checking serde_json v1.0.20 [INFO] [stderr] Checking word_counter v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:92:25 [INFO] [stdout] | [INFO] [stdout] 92 | let mut raw_words = String::from(str::from_utf8(&char_vec).unwrap()); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0635]: unknown feature `io` [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(io)] [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:92:25 [INFO] [stdout] | [INFO] [stdout] 92 | let mut raw_words = String::from(str::from_utf8(&char_vec).unwrap()); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stdout] error[E0635]: unknown feature `io` [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(io)] [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `word_counter` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "6c943e1abc8d52a601e6a1f81b47fd88a7a6ec61a708989e407133f983f3ae4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6c943e1abc8d52a601e6a1f81b47fd88a7a6ec61a708989e407133f983f3ae4f", kill_on_drop: false }` [INFO] [stdout] 6c943e1abc8d52a601e6a1f81b47fd88a7a6ec61a708989e407133f983f3ae4f