[INFO] updating cached repository https://github.com/reese/kvs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da26c4ec360426bf8e7fe16ba325c6a2e6246043
[INFO] checking reese/kvs against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freese%2Fkvs" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/reese/kvs on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-12/source/Cargo.toml
[INFO] crate git repo https://github.com/reese/kvs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "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] 1143022b38c6e6245bb716abb763474c5285f00132910ce073c4272a7791a1b3
[INFO] running `"docker" "start" "-a" "1143022b38c6e6245bb716abb763474c5285f00132910ce073c4272a7791a1b3"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling nias v0.4.0
[INFO] [stderr]    Compiling envmnt v0.7.5
[INFO] [stderr]     Checking predicates v1.0.2
[INFO] [stderr]     Checking ci_info v0.8.1
[INFO] [stderr]    Compiling quote 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 failure_derive v0.1.6
[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 v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking escargot v0.4.0
[INFO] [stderr]     Checking kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Permissions`
[INFO] [stderr]   --> src/lib.rs:18:58
[INFO] [stderr]    |
[INFO] [stderr] 18 |     BufReaderWithPosition, BufWriterWithPosition, Entry, Permissions,
[INFO] [stderr]    |                                                          ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]   --> src/lib.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 | use serde::{Deserialize, Serialize};
[INFO] [stderr]    |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ffi::OsString`
[INFO] [stderr]   --> src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::ffi::OsString;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `OpenOptions`
[INFO] [stderr]   --> src/lib.rs:23:31
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::fs::{read_dir, File, OpenOptions};
[INFO] [stderr]    |                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufReader`, `BufWriter`, `Read`, `Write`
[INFO] [stderr]   --> src/lib.rs:24:15
[INFO] [stderr]    |
[INFO] [stderr] 24 | use std::io::{BufReader, BufWriter, Read, Write};
[INFO] [stderr]    |               ^^^^^^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]   --> src/lib.rs:25:17
[INFO] [stderr]    |
[INFO] [stderr] 25 | use std::path::{Path, PathBuf};
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/store/error.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/store/reader.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{BufReader, Read};
[INFO] [stderr]   |                          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/store/writer.rs:4:26
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{BufWriter, Write};
[INFO] [stderr]   |                          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error`
[INFO] [stderr]    --> src/lib.rs:110:21
[INFO] [stderr]     |
[INFO] [stderr] 110 |                 Err(error) => panic!("Error while reading from log."),
[INFO] [stderr]     |                     ^^^^^ help: consider prefixing with an underscore: `_error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/lib.rs:123:30
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub fn remove(&mut self, key: String) -> Result<()> {
[INFO] [stderr]     |                              ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rm`
[INFO] [stderr]   --> src/store/entry.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn rm(key: String) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Permissions`
[INFO] [stderr]  --> src/store/permissions.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub enum Permissions {
[INFO] [stderr]   |          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_allowed`
[INFO] [stderr]  --> src/store/permissions.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn is_allowed(&self) -> bool {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr] error[E0423]: expected value, found macro `matches`
[INFO] [stderr]   --> src/bin/kvs.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 |     Get { key: String },
[INFO] [stderr]    |                ^^^^^^ help: use `!` to invoke the macro: `matches!`
[INFO] [stderr] 
[INFO] [stderr] error[E0423]: expected value, found macro `matches`
[INFO] [stderr]   --> src/bin/kvs.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Set { key: String, value: String },
[INFO] [stderr]    |                ^^^^^^ help: use `!` to invoke the macro: `matches!`
[INFO] [stderr] 
[INFO] [stderr] error[E0423]: expected value, found macro `matches`
[INFO] [stderr]   --> src/bin/kvs.rs:11:31
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Set { key: String, value: String },
[INFO] [stderr]    |                               ^^^^^^ help: use `!` to invoke the macro: `matches!`
[INFO] [stderr] 
[INFO] [stderr] error[E0423]: expected value, found macro `matches`
[INFO] [stderr]   --> src/bin/kvs.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Rm { key: String },
[INFO] [stderr]    |               ^^^^^^ help: use `!` to invoke the macro: `matches!`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0423`.
[INFO] [stderr] error: could not compile `kvs`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "1143022b38c6e6245bb716abb763474c5285f00132910ce073c4272a7791a1b3"`
[INFO] running `"docker" "rm" "-f" "1143022b38c6e6245bb716abb763474c5285f00132910ce073c4272a7791a1b3"`
[INFO] [stdout] 1143022b38c6e6245bb716abb763474c5285f00132910ce073c4272a7791a1b3