[INFO] cloning repository https://github.com/reese/kvs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reese/kvs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freese%2Fkvs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freese%2Fkvs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 605988e5d92306a26a7ee4c51f0a3acbd7c77849 [INFO] checking reese/kvs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freese%2Fkvs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/reese/kvs on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/reese/kvs [INFO] finished tweaking git repo https://github.com/reese/kvs [INFO] tweaked toml for git repo https://github.com/reese/kvs written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/reese/kvs 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... 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[stderr] Downloaded syn-mid v0.4.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 77486c63923e092a6f4e67532701b00ccaa1e2ef23972ab6f704ed976ddde711 [INFO] running `Command { std: "docker" "start" "-a" "77486c63923e092a6f4e67532701b00ccaa1e2ef23972ab6f704ed976ddde711", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "77486c63923e092a6f4e67532701b00ccaa1e2ef23972ab6f704ed976ddde711", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "77486c63923e092a6f4e67532701b00ccaa1e2ef23972ab6f704ed976ddde711", kill_on_drop: false }` [INFO] [stdout] 77486c63923e092a6f4e67532701b00ccaa1e2ef23972ab6f704ed976ddde711 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2261faf4f9e8f376bd834e9e1cd9bd0f2de13aa3da568453af9eece263dda770 [INFO] running `Command { std: "docker" "start" "-a" "2261faf4f9e8f376bd834e9e1cd9bd0f2de13aa3da568453af9eece263dda770", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.7 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.13 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling serde v1.0.104 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling memchr v2.3.0 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Compiling failure_derive v0.1.6 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Compiling rayon-core v1.7.0 [INFO] [stderr] Checking thread_local v0.3.4 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Compiling memoffset v0.5.3 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking regex-automata v0.1.8 [INFO] [stderr] Checking crossbeam-queue v0.2.1 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking regex-syntax v0.6.13 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking num_cpus v1.12.0 [INFO] [stderr] Checking predicates-core v1.0.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking treeline v0.1.0 [INFO] [stderr] Checking normalize-line-endings v0.2.2 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Checking predicates-tree v1.0.0 [INFO] [stderr] Checking rand_xoshiro v0.1.0 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking float-cmp v0.5.3 [INFO] [stderr] Checking chrono v0.4.10 [INFO] [stderr] Checking criterion-plot v0.3.1 [INFO] [stderr] Checking rayon v1.3.0 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Checking stderrlog v0.4.3 [INFO] [stderr] Checking backtrace v0.3.42 [INFO] [stderr] Checking regex v1.3.3 [INFO] [stderr] Checking predicates v1.0.2 [INFO] [stderr] Compiling syn-mid v0.4.0 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling serde_derive v1.0.104 [INFO] [stderr] Compiling rustversion v1.0.1 [INFO] [stderr] Compiling proc-macro-error v0.4.4 [INFO] [stderr] Compiling proc-macro-error-attr v0.4.3 [INFO] [stderr] Checking failure v0.1.6 [INFO] [stderr] Compiling structopt-derive v0.4.0 [INFO] [stderr] Checking structopt v0.3.7 [INFO] [stderr] Checking serde_json v1.0.44 [INFO] [stderr] Checking bstr v0.2.11 [INFO] [stderr] Checking csv v1.1.3 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking tinytemplate v1.0.3 [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/store/error.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lang::*` [INFO] [stdout] --> src/lib.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | pub use lang::*; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `directory` is never read [INFO] [stdout] --> src/store/writer.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 8 | pub struct BufWriterWithPosition { [INFO] [stdout] | --------------------- field in this struct [INFO] [stdout] 9 | directory: PathBuf, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `BufWriterWithPosition` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::net::SocketAddr` [INFO] [stdout] --> src/bin/kvs-client.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::net::SocketAddr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/bin/kvs-server.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `KvsEngine` [INFO] [stdout] --> src/bin/kvs-server.rs:7:20 [INFO] [stdout] | [INFO] [stdout] 7 | use kvs::{KvStore, KvsEngine, Options, Result}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::net::SocketAddr` [INFO] [stdout] --> src/bin/kvs-server.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::net::SocketAddr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking criterion v0.2.11 [INFO] [stdout] warning: unused variable: `store` [INFO] [stdout] --> src/bin/kvs-server.rs:40:13 [INFO] [stdout] | [INFO] [stdout] 40 | let mut store = KvStore::open(current_dir()?)?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_store` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/kvs-server.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let mut store = KvStore::open(current_dir()?)?; [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] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/kvs-server.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | let mut exit_code = 0; [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `key` is never read [INFO] [stdout] --> src/bin/kvs-server.rs:27:11 [INFO] [stdout] | [INFO] [stdout] 27 | Get { key: String }, [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `key` and `value` are never read [INFO] [stdout] --> src/bin/kvs-server.rs:28:11 [INFO] [stdout] | [INFO] [stdout] 28 | Set { key: String, value: String }, [INFO] [stdout] | --- ^^^ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `key` is never read [INFO] [stdout] --> src/bin/kvs-server.rs:29:10 [INFO] [stdout] | [INFO] [stdout] 29 | Rm { key: String }, [INFO] [stdout] | -- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/bin/kvs-server.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `KvsEngine` [INFO] [stdout] --> src/bin/kvs-server.rs:7:20 [INFO] [stdout] | [INFO] [stdout] 7 | use kvs::{KvStore, KvsEngine, Options, Result}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::net::SocketAddr` [INFO] [stdout] --> src/bin/kvs-server.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::net::SocketAddr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `From` is imported redundantly [INFO] [stdout] --> src/store/error.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::convert::From; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `From` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lang::*` [INFO] [stdout] --> src/lib.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | pub use lang::*; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::net::SocketAddr` [INFO] [stdout] --> src/bin/kvs-client.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::net::SocketAddr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `store` [INFO] [stdout] --> src/bin/kvs-server.rs:40:13 [INFO] [stdout] | [INFO] [stdout] 40 | let mut store = KvStore::open(current_dir()?)?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_store` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/kvs-server.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let mut store = KvStore::open(current_dir()?)?; [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] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/kvs-server.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | let mut exit_code = 0; [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `key` is never read [INFO] [stdout] --> src/bin/kvs-server.rs:27:11 [INFO] [stdout] | [INFO] [stdout] 27 | Get { key: String }, [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `key` and `value` are never read [INFO] [stdout] --> src/bin/kvs-server.rs:28:11 [INFO] [stdout] | [INFO] [stdout] 28 | Set { key: String, value: String }, [INFO] [stdout] | --- ^^^ ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `key` is never read [INFO] [stdout] --> src/bin/kvs-server.rs:29:10 [INFO] [stdout] | [INFO] [stdout] 29 | Rm { key: String }, [INFO] [stdout] | -- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `directory` is never read [INFO] [stdout] --> src/store/writer.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 8 | pub struct BufWriterWithPosition { [INFO] [stdout] | --------------------- field in this struct [INFO] [stdout] 9 | directory: PathBuf, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `BufWriterWithPosition` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.82s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "2261faf4f9e8f376bd834e9e1cd9bd0f2de13aa3da568453af9eece263dda770", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2261faf4f9e8f376bd834e9e1cd9bd0f2de13aa3da568453af9eece263dda770", kill_on_drop: false }` [INFO] [stdout] 2261faf4f9e8f376bd834e9e1cd9bd0f2de13aa3da568453af9eece263dda770 [INFO] checking reese/kvs against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freese%2Fkvs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/reese/kvs on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/reese/kvs [INFO] finished tweaking git repo https://github.com/reese/kvs [INFO] tweaked toml for git repo https://github.com/reese/kvs written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/reese/kvs 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5e4d9bb5798be7e322fe86553969078ea72f751f0dcbd3f03b5e1ee8772f4e07 [INFO] running `Command { std: "docker" "start" "-a" "5e4d9bb5798be7e322fe86553969078ea72f751f0dcbd3f03b5e1ee8772f4e07", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5e4d9bb5798be7e322fe86553969078ea72f751f0dcbd3f03b5e1ee8772f4e07", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e4d9bb5798be7e322fe86553969078ea72f751f0dcbd3f03b5e1ee8772f4e07", kill_on_drop: false }` [INFO] [stdout] 5e4d9bb5798be7e322fe86553969078ea72f751f0dcbd3f03b5e1ee8772f4e07 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1c95485c4d05a8a3edd98f695e83b37e186dcf75c9c740d1243c65a02584ddfd [INFO] running `Command { std: "docker" "start" "-a" "1c95485c4d05a8a3edd98f695e83b37e186dcf75c9c740d1243c65a02584ddfd", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.7 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.13 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling serde v1.0.104 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling memchr v2.3.0 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling failure_derive v0.1.6 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking thread_local v0.3.4 [INFO] [stderr] Compiling rayon-core v1.7.0 [INFO] [stderr] Compiling memoffset v0.5.3 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking regex-automata v0.1.8 [INFO] [stderr] Checking num_cpus v1.12.0 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking crossbeam-queue v0.2.1 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking predicates-core v1.0.0 [INFO] [stderr] Checking regex-syntax v0.6.13 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking treeline v0.1.0 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking normalize-line-endings v0.2.2 [INFO] [stderr] Checking float-cmp v0.5.3 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking predicates-tree v1.0.0 [INFO] [stderr] Checking rand_xoshiro v0.1.0 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking chrono v0.4.10 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Checking rayon v1.3.0 [INFO] [stderr] Checking criterion-plot v0.3.1 [INFO] [stderr] Checking stderrlog v0.4.3 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Checking backtrace v0.3.42 [INFO] [stderr] Checking regex v1.3.3 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.3.3/src/exec.rs:836:13 [INFO] [stdout] | [INFO] [stdout] 836 | / match dfa::Fsm::reverse( [INFO] [stdout] 837 | | &self.ro.dfa_reverse, [INFO] [stdout] 838 | | self.cache.value(), [INFO] [stdout] 839 | | false, [INFO] [stdout] ... | [INFO] [stdout] 850 | | Quit => return Some(Quit), [INFO] [stdout] 851 | | }; [INFO] [stdout] | |_____________^ cannot infer type [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "1c95485c4d05a8a3edd98f695e83b37e186dcf75c9c740d1243c65a02584ddfd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1c95485c4d05a8a3edd98f695e83b37e186dcf75c9c740d1243c65a02584ddfd", kill_on_drop: false }` [INFO] [stdout] 1c95485c4d05a8a3edd98f695e83b37e186dcf75c9c740d1243c65a02584ddfd