[INFO] cloning repository https://github.com/MnO2/kvs [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MnO2/kvs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMnO2%2Fkvs"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMnO2%2Fkvs'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] e09c1999dd44b2172fc761dcee99f50b8f73ae40 [INFO] checking MnO2/kvs against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMnO2%2Fkvs" "/workspace/builds/worker-3/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MnO2/kvs on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/MnO2/kvs [INFO] finished tweaking git repo https://github.com/MnO2/kvs [INFO] tweaked toml for git repo https://github.com/MnO2/kvs written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/MnO2/kvs already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 921216f9e1fb245087bc7d0f0e0d294f40462326c2072c4da736af761c06600c [INFO] running `"docker" "start" "-a" "921216f9e1fb245087bc7d0f0e0d294f40462326c2072c4da736af761c06600c"` [INFO] [stderr] Compiling syn v0.15.36 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking float-cmp v0.4.0 [INFO] [stderr] Checking rmp v0.8.7 [INFO] [stderr] Checking tempfile v3.0.8 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Compiling serde_derive v1.0.92 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking serde v1.0.94 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking rmp-serde v0.13.7 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] warning: unused import: `Serializer` [INFO] [stderr] --> src/reader.rs:3:31 [INFO] [stderr] | [INFO] [stderr] 3 | use rmp_serde::{Deserializer, Serializer}; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Serialize` [INFO] [stderr] --> src/reader.rs:4:26 [INFO] [stderr] | [INFO] [stderr] 4 | use serde::{Deserialize, Serialize}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::BufRead` [INFO] [stderr] --> src/reader.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::io::BufRead; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Deserializer` [INFO] [stderr] --> src/writer.rs:3:17 [INFO] [stderr] | [INFO] [stderr] 3 | use rmp_serde::{Deserializer, Serializer}; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Deserialize` [INFO] [stderr] --> src/writer.rs:4:13 [INFO] [stderr] | [INFO] [stderr] 4 | use serde::{Deserialize, Serialize}; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BigEndian`, `WriteBytesExt` [INFO] [stderr] --> src/lib.rs:9:17 [INFO] [stderr] | [INFO] [stderr] 9 | use byteorder::{BigEndian, WriteBytesExt}; [INFO] [stderr] | ^^^^^^^^^ ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Deserializer`, `Serializer` [INFO] [stderr] --> src/lib.rs:10:17 [INFO] [stderr] | [INFO] [stderr] 10 | use rmp_serde::{Deserializer, Serializer}; [INFO] [stderr] | ^^^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize` [INFO] [stderr] --> src/lib.rs:11:13 [INFO] [stderr] | [INFO] [stderr] 11 | use serde::{Deserialize, Serialize}; [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file_offset` [INFO] [stderr] --> src/lib.rs:249:13 [INFO] [stderr] | [INFO] [stderr] 249 | let file_offset = file_to_write.seek(io::SeekFrom::End(0))?; [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_file_offset` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `curr_offset` is assigned to, but never used [INFO] [stderr] --> src/lib.rs:303:21 [INFO] [stderr] | [INFO] [stderr] 303 | let mut curr_offset = 0; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_curr_offset` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `curr_offset` is never read [INFO] [stderr] --> src/lib.rs:337:17 [INFO] [stderr] | [INFO] [stderr] 337 | curr_offset = next_offset; [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: value assigned to `curr_idx` is never read [INFO] [stderr] --> src/lib.rs:342:9 [INFO] [stderr] | [INFO] [stderr] 342 | curr_idx += 1; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:172:14 [INFO] [stderr] | [INFO] [stderr] 172 | let (mut file_id, mut file_to_write) = if self.should_write_to_new_file(self.file_names.last().unwrap())? { [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:157:13 [INFO] [stderr] | [INFO] [stderr] 157 | reader.read_record(io::SeekFrom::Start(keyinfo.record_pos), &mut record, &mut next_offset); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:204:9 [INFO] [stderr] | [INFO] [stderr] 204 | writer.write_record(&new_record); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:259:9 [INFO] [stderr] | [INFO] [stderr] 259 | writer.write_record(&new_record); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:297:13 [INFO] [stderr] | [INFO] [stderr] 297 | rdr.seek(io::SeekFrom::Start(0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:383:13 [INFO] [stderr] | [INFO] [stderr] 383 | f.1.sync_data(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::path::Path` [INFO] [stderr] --> src/bin/kvs.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::path::Path; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stderr] warning: unused import: `Serializer` [INFO] [stderr] --> src/reader.rs:3:31 [INFO] [stderr] | [INFO] [stderr] 3 | use rmp_serde::{Deserializer, Serializer}; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Serialize` [INFO] [stderr] --> src/reader.rs:4:26 [INFO] [stderr] | [INFO] [stderr] 4 | use serde::{Deserialize, Serialize}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::BufRead` [INFO] [stderr] --> src/reader.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::io::BufRead; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Deserializer` [INFO] [stderr] --> src/writer.rs:3:17 [INFO] [stderr] | [INFO] [stderr] 3 | use rmp_serde::{Deserializer, Serializer}; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Deserialize` [INFO] [stderr] --> src/writer.rs:4:13 [INFO] [stderr] | [INFO] [stderr] 4 | use serde::{Deserialize, Serialize}; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BigEndian`, `WriteBytesExt` [INFO] [stderr] --> src/lib.rs:9:17 [INFO] [stderr] | [INFO] [stderr] 9 | use byteorder::{BigEndian, WriteBytesExt}; [INFO] [stderr] | ^^^^^^^^^ ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Deserializer`, `Serializer` [INFO] [stderr] --> src/lib.rs:10:17 [INFO] [stderr] | [INFO] [stderr] 10 | use rmp_serde::{Deserializer, Serializer}; [INFO] [stderr] | ^^^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize` [INFO] [stderr] --> src/lib.rs:11:13 [INFO] [stderr] | [INFO] [stderr] 11 | use serde::{Deserialize, Serialize}; [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::path::Path` [INFO] [stderr] --> src/bin/kvs.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::path::Path; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `file_offset` [INFO] [stderr] --> src/lib.rs:249:13 [INFO] [stderr] | [INFO] [stderr] 249 | let file_offset = file_to_write.seek(io::SeekFrom::End(0))?; [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_file_offset` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `curr_offset` is assigned to, but never used [INFO] [stderr] --> src/lib.rs:303:21 [INFO] [stderr] | [INFO] [stderr] 303 | let mut curr_offset = 0; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_curr_offset` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `curr_offset` is never read [INFO] [stderr] --> src/lib.rs:337:17 [INFO] [stderr] | [INFO] [stderr] 337 | curr_offset = next_offset; [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: value assigned to `curr_idx` is never read [INFO] [stderr] --> src/lib.rs:342:9 [INFO] [stderr] | [INFO] [stderr] 342 | curr_idx += 1; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:172:14 [INFO] [stderr] | [INFO] [stderr] 172 | let (mut file_id, mut file_to_write) = if self.should_write_to_new_file(self.file_names.last().unwrap())? { [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:157:13 [INFO] [stderr] | [INFO] [stderr] 157 | reader.read_record(io::SeekFrom::Start(keyinfo.record_pos), &mut record, &mut next_offset); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:204:9 [INFO] [stderr] | [INFO] [stderr] 204 | writer.write_record(&new_record); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:259:9 [INFO] [stderr] | [INFO] [stderr] 259 | writer.write_record(&new_record); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:297:13 [INFO] [stderr] | [INFO] [stderr] 297 | rdr.seek(io::SeekFrom::Start(0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:383:13 [INFO] [stderr] | [INFO] [stderr] 383 | f.1.sync_data(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 54.99s [INFO] running `"docker" "inspect" "921216f9e1fb245087bc7d0f0e0d294f40462326c2072c4da736af761c06600c"` [INFO] running `"docker" "rm" "-f" "921216f9e1fb245087bc7d0f0e0d294f40462326c2072c4da736af761c06600c"` [INFO] [stdout] 921216f9e1fb245087bc7d0f0e0d294f40462326c2072c4da736af761c06600c