[INFO] crate json2csv 0.1.0 is already in cache
[INFO] checking json2csv-0.1.0 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate json2csv 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate json2csv 0.1.0 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate json2csv 0.1.0
[INFO] finished tweaking crates.io crate json2csv 0.1.0
[INFO] tweaked toml for crates.io crate json2csv 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 98b3988b840b81e842dc370f74b2e4eb4d09f96ae7a6cdc0dd53ae2007c95895
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "98b3988b840b81e842dc370f74b2e4eb4d09f96ae7a6cdc0dd53ae2007c95895"`
[INFO] [stderr]     Checking error-chain v0.12.2
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking rust-flatten-json v0.1.0
[INFO] [stderr]     Checking json2csv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `json`
[INFO] [stderr]  --> src/convert/unwind_json.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | use serde_json::{json, Value};
[INFO] [stderr]   |                  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/convert.rs:36:21
[INFO] [stderr]    |
[INFO] [stderr] 36 | ) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/convert.rs:81:85
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub fn convert_header_to_csv_record(headers: &Vec<&str>) -> Result<Vec<String>, Box<Error>> {
[INFO] [stderr]    |                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/convert.rs:92:30
[INFO] [stderr]    |
[INFO] [stderr] 92 | ) -> Result<Vec<String>, Box<Error>> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:12:29
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn main() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:49:25
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut reader: Box<BufRead> = match m.value_of("INPUT") {
[INFO] [stderr]    |                         ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:72:52
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn io_writer(path: Option<&str>) -> io::Result<Box<io::Write + 'static>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/convert.rs:36:21
[INFO] [stderr]    |
[INFO] [stderr] 36 | ) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/convert.rs:81:85
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub fn convert_header_to_csv_record(headers: &Vec<&str>) -> Result<Vec<String>, Box<Error>> {
[INFO] [stderr]    |                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/convert.rs:92:30
[INFO] [stderr]    |
[INFO] [stderr] 92 | ) -> Result<Vec<String>, Box<Error>> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:12:29
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn main() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:49:25
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut reader: Box<BufRead> = match m.value_of("INPUT") {
[INFO] [stderr]    |                         ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:72:52
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn io_writer(path: Option<&str>) -> io::Result<Box<io::Write + 'static>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut reader: Box<BufRead> = match m.value_of("INPUT") {
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut reader: Box<BufRead> = match m.value_of("INPUT") {
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/convert.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |         let mut sample_json = input.as_bytes();
[INFO] [stderr]     |             ----^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.45s
[INFO] running `"docker" "inspect" "98b3988b840b81e842dc370f74b2e4eb4d09f96ae7a6cdc0dd53ae2007c95895"`
[INFO] running `"docker" "rm" "-f" "98b3988b840b81e842dc370f74b2e4eb4d09f96ae7a6cdc0dd53ae2007c95895"`
[INFO] [stdout] 98b3988b840b81e842dc370f74b2e4eb4d09f96ae7a6cdc0dd53ae2007c95895
