Dec 19 21:55:32.619 INFO checking Shacham6/serde_training_rust against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:55:32.619 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/Shacham6/serde_training_rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:55:33.056 INFO [stdout] 381f1a296f6125aedb8ec2830a72fb208d3a8dfe2c86eabe8a6cb92794a991c6
Dec 19 21:55:33.064 INFO running `"docker" "start" "-a" "381f1a296f6125aedb8ec2830a72fb208d3a8dfe2c86eabe8a6cb92794a991c6"`
Dec 19 21:55:34.864 INFO [stderr]     Checking serde_json v1.0.5
Dec 19 21:55:34.864 INFO [stderr]     Checking serde_yaml v0.7.1
Dec 19 21:55:37.981 INFO [stderr]     Checking serde_fun v0.1.0 (/opt/crater/workdir)
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 21:55:38.589 INFO [stderr]  --> src/main.rs:8:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr] 8 | use std::fs::File;
Dec 19 21:55:38.589 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `std::io::Read`
Dec 19 21:55:38.589 INFO [stderr]  --> src/main.rs:9:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr] 9 | use std::io::Read;
Dec 19 21:55:38.589 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `std::vec::Vec`
Dec 19 21:55:38.589 INFO [stderr]   --> src/main.rs:10:5
Dec 19 21:55:38.589 INFO [stderr]    |
Dec 19 21:55:38.589 INFO [stderr] 10 | use std::vec::Vec;
Dec 19 21:55:38.589 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused imports: `DeserializeOwned`, `Deserialize`
Dec 19 21:55:38.589 INFO [stderr]   --> src/main.rs:13:17
Dec 19 21:55:38.589 INFO [stderr]    |
Dec 19 21:55:38.589 INFO [stderr] 13 | use serde::de::{Deserialize, DeserializeOwned};
Dec 19 21:55:38.589 INFO [stderr]    |                 ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `serde_yaml::from_str as yaml_from_str`
Dec 19 21:55:38.589 INFO [stderr]   --> src/main.rs:14:5
Dec 19 21:55:38.589 INFO [stderr]    |
Dec 19 21:55:38.589 INFO [stderr] 14 | use serde_yaml::from_str as yaml_from_str;
Dec 19 21:55:38.589 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `serde`
Dec 19 21:55:38.589 INFO [stderr]  --> src/examples/json_example.rs:1:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr] 1 | use serde;
Dec 19 21:55:38.589 INFO [stderr]   |     ^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `serde_derive`
Dec 19 21:55:38.589 INFO [stderr]  --> src/examples/json_example.rs:3:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr] 3 | use serde_derive;
Dec 19 21:55:38.589 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 21:55:38.589 INFO [stderr]  --> src/examples/json_example.rs:5:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr] 5 | use std::fs::File;
Dec 19 21:55:38.589 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `std::io::Read`
Dec 19 21:55:38.589 INFO [stderr]  --> src/examples/json_example.rs:6:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr] 6 | use std::io::Read;
Dec 19 21:55:38.589 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `std::env::args`
Dec 19 21:55:38.589 INFO [stderr]  --> src/examples/json_example.rs:8:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr] 8 | use std::env::args;
Dec 19 21:55:38.589 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `std::io::Error`
Dec 19 21:55:38.589 INFO [stderr]  --> src/examples/json_example.rs:9:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.589 INFO [stderr] 9 | use std::io::Error;
Dec 19 21:55:38.589 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused imports: `DeserializeOwned`, `Deserialize`
Dec 19 21:55:38.589 INFO [stderr]   --> src/examples/json_example.rs:12:17
Dec 19 21:55:38.589 INFO [stderr]    |
Dec 19 21:55:38.589 INFO [stderr] 12 | use serde::de::{Deserialize, DeserializeOwned};
Dec 19 21:55:38.589 INFO [stderr]    |                 ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `serde_yaml::from_str as yaml_from_str`
Dec 19 21:55:38.589 INFO [stderr]   --> src/examples/json_example.rs:13:5
Dec 19 21:55:38.589 INFO [stderr]    |
Dec 19 21:55:38.589 INFO [stderr] 13 | use serde_yaml::from_str as yaml_from_str;
Dec 19 21:55:38.589 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:55:38.589 INFO [stderr] 
Dec 19 21:55:38.589 INFO [stderr] warning: unused import: `serde`
Dec 19 21:55:38.589 INFO [stderr]  --> src/examples/yaml_example.rs:1:5
Dec 19 21:55:38.589 INFO [stderr]   |
Dec 19 21:55:38.590 INFO [stderr] 1 | use serde;
Dec 19 21:55:38.590 INFO [stderr]   |     ^^^^^
Dec 19 21:55:38.590 INFO [stderr] 
Dec 19 21:55:38.590 INFO [stderr] warning: unused import: `serde_derive`
Dec 19 21:55:38.590 INFO [stderr]  --> src/examples/yaml_example.rs:2:5
Dec 19 21:55:38.590 INFO [stderr]   |
Dec 19 21:55:38.590 INFO [stderr] 2 | use serde_derive;
Dec 19 21:55:38.590 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 19 21:55:38.590 INFO [stderr] 
Dec 19 21:55:38.590 INFO [stderr] warning: unused import: `std::env::args`
Dec 19 21:55:38.590 INFO [stderr]  --> src/examples/yaml_example.rs:5:5
Dec 19 21:55:38.590 INFO [stderr]   |
Dec 19 21:55:38.590 INFO [stderr] 5 | use std::env::args;
Dec 19 21:55:38.590 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 21:55:38.590 INFO [stderr] 
Dec 19 21:55:38.612 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 21:55:38.612 INFO [stderr]  --> src/main.rs:8:5
Dec 19 21:55:38.612 INFO [stderr]   |
Dec 19 21:55:38.612 INFO [stderr] 8 | use std::fs::File;
Dec 19 21:55:38.612 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 21:55:38.612 INFO [stderr]   |
Dec 19 21:55:38.612 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:55:38.612 INFO [stderr] 
Dec 19 21:55:38.612 INFO [stderr] warning: unused import: `std::io::Read`
Dec 19 21:55:38.612 INFO [stderr]  --> src/main.rs:9:5
Dec 19 21:55:38.612 INFO [stderr]   |
Dec 19 21:55:38.612 INFO [stderr] 9 | use std::io::Read;
Dec 19 21:55:38.612 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 21:55:38.612 INFO [stderr] 
Dec 19 21:55:38.612 INFO [stderr] warning: unused import: `std::vec::Vec`
Dec 19 21:55:38.612 INFO [stderr]   --> src/main.rs:10:5
Dec 19 21:55:38.612 INFO [stderr]    |
Dec 19 21:55:38.612 INFO [stderr] 10 | use std::vec::Vec;
Dec 19 21:55:38.612 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 21:55:38.612 INFO [stderr] 
Dec 19 21:55:38.612 INFO [stderr] warning: unused imports: `DeserializeOwned`, `Deserialize`
Dec 19 21:55:38.612 INFO [stderr]   --> src/main.rs:13:17
Dec 19 21:55:38.612 INFO [stderr]    |
Dec 19 21:55:38.612 INFO [stderr] 13 | use serde::de::{Deserialize, DeserializeOwned};
Dec 19 21:55:38.612 INFO [stderr]    |                 ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
Dec 19 21:55:38.612 INFO [stderr] 
Dec 19 21:55:38.612 INFO [stderr] warning: unused import: `serde_yaml::from_str as yaml_from_str`
Dec 19 21:55:38.612 INFO [stderr]   --> src/main.rs:14:5
Dec 19 21:55:38.612 INFO [stderr]    |
Dec 19 21:55:38.612 INFO [stderr] 14 | use serde_yaml::from_str as yaml_from_str;
Dec 19 21:55:38.612 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:55:38.612 INFO [stderr] 
Dec 19 21:55:38.612 INFO [stderr] warning: unused import: `serde`
Dec 19 21:55:38.612 INFO [stderr]  --> src/examples/json_example.rs:1:5
Dec 19 21:55:38.612 INFO [stderr]   |
Dec 19 21:55:38.612 INFO [stderr] 1 | use serde;
Dec 19 21:55:38.612 INFO [stderr]   |     ^^^^^
Dec 19 21:55:38.612 INFO [stderr] 
Dec 19 21:55:38.612 INFO [stderr] warning: unused import: `serde_derive`
Dec 19 21:55:38.612 INFO [stderr]  --> src/examples/json_example.rs:3:5
Dec 19 21:55:38.612 INFO [stderr]   |
Dec 19 21:55:38.612 INFO [stderr] 3 | use serde_derive;
Dec 19 21:55:38.612 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 19 21:55:38.612 INFO [stderr] 
Dec 19 21:55:38.612 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 21:55:38.612 INFO [stderr]  --> src/examples/json_example.rs:5:5
Dec 19 21:55:38.613 INFO [stderr]   |
Dec 19 21:55:38.613 INFO [stderr] 5 | use std::fs::File;
Dec 19 21:55:38.613 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 21:55:38.613 INFO [stderr] 
Dec 19 21:55:38.613 INFO [stderr] warning: unused import: `std::io::Read`
Dec 19 21:55:38.613 INFO [stderr]  --> src/examples/json_example.rs:6:5
Dec 19 21:55:38.613 INFO [stderr]   |
Dec 19 21:55:38.613 INFO [stderr] 6 | use std::io::Read;
Dec 19 21:55:38.613 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 21:55:38.613 INFO [stderr] 
Dec 19 21:55:38.613 INFO [stderr] warning: unused import: `std::env::args`
Dec 19 21:55:38.613 INFO [stderr]  --> src/examples/json_example.rs:8:5
Dec 19 21:55:38.613 INFO [stderr]   |
Dec 19 21:55:38.613 INFO [stderr] 8 | use std::env::args;
Dec 19 21:55:38.613 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 21:55:38.613 INFO [stderr] 
Dec 19 21:55:38.613 INFO [stderr] warning: unused import: `std::io::Error`
Dec 19 21:55:38.613 INFO [stderr]  --> src/examples/json_example.rs:9:5
Dec 19 21:55:38.613 INFO [stderr]   |
Dec 19 21:55:38.613 INFO [stderr] 9 | use std::io::Error;
Dec 19 21:55:38.613 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 21:55:38.613 INFO [stderr] 
Dec 19 21:55:38.613 INFO [stderr] warning: unused imports: `DeserializeOwned`, `Deserialize`
Dec 19 21:55:38.613 INFO [stderr]   --> src/examples/json_example.rs:12:17
Dec 19 21:55:38.613 INFO [stderr]    |
Dec 19 21:55:38.613 INFO [stderr] 12 | use serde::de::{Deserialize, DeserializeOwned};
Dec 19 21:55:38.613 INFO [stderr]    |                 ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
Dec 19 21:55:38.613 INFO [stderr] 
Dec 19 21:55:38.613 INFO [stderr] warning: unused import: `serde_yaml::from_str as yaml_from_str`
Dec 19 21:55:38.613 INFO [stderr]   --> src/examples/json_example.rs:13:5
Dec 19 21:55:38.613 INFO [stderr]    |
Dec 19 21:55:38.613 INFO [stderr] 13 | use serde_yaml::from_str as yaml_from_str;
Dec 19 21:55:38.613 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:55:38.613 INFO [stderr] 
Dec 19 21:55:38.621 INFO [stderr] warning: unused import: `serde`
Dec 19 21:55:38.621 INFO [stderr]  --> src/examples/yaml_example.rs:1:5
Dec 19 21:55:38.621 INFO [stderr]   |
Dec 19 21:55:38.621 INFO [stderr] 1 | use serde;
Dec 19 21:55:38.621 INFO [stderr]   |     ^^^^^
Dec 19 21:55:38.621 INFO [stderr] 
Dec 19 21:55:38.621 INFO [stderr] warning: unused import: `serde_derive`
Dec 19 21:55:38.621 INFO [stderr]  --> src/examples/yaml_example.rs:2:5
Dec 19 21:55:38.621 INFO [stderr]   |
Dec 19 21:55:38.621 INFO [stderr] 2 | use serde_derive;
Dec 19 21:55:38.621 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 19 21:55:38.621 INFO [stderr] 
Dec 19 21:55:38.621 INFO [stderr] warning: unused import: `std::env::args`
Dec 19 21:55:38.621 INFO [stderr]  --> src/examples/yaml_example.rs:5:5
Dec 19 21:55:38.621 INFO [stderr]   |
Dec 19 21:55:38.621 INFO [stderr] 5 | use std::env::args;
Dec 19 21:55:38.621 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 19 21:55:38.621 INFO [stderr] 
Dec 19 21:55:38.932 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:55:38.932 INFO [stderr]   --> src/examples/json_example.rs:18:5
Dec 19 21:55:38.932 INFO [stderr]    |
Dec 19 21:55:38.932 INFO [stderr] 18 |     read_content_of_file_to_string(filepath.as_str(), &mut string);
Dec 19 21:55:38.932 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:55:38.932 INFO [stderr]    |
Dec 19 21:55:38.932 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:55:38.932 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:55:38.932 INFO [stderr] 
Dec 19 21:55:39.000 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:55:39.000 INFO [stderr]   --> src/examples/json_example.rs:18:5
Dec 19 21:55:39.000 INFO [stderr]    |
Dec 19 21:55:39.000 INFO [stderr] 18 |     read_content_of_file_to_string(filepath.as_str(), &mut string);
Dec 19 21:55:39.000 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:55:39.000 INFO [stderr]    |
Dec 19 21:55:39.000 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:55:39.000 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:55:39.000 INFO [stderr] 
Dec 19 21:55:39.048 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.29s
Dec 19 21:55:39.846 INFO running `"docker" "inspect" "381f1a296f6125aedb8ec2830a72fb208d3a8dfe2c86eabe8a6cb92794a991c6"`
Dec 19 21:55:40.096 INFO running `"docker" "rm" "-f" "381f1a296f6125aedb8ec2830a72fb208d3a8dfe2c86eabe8a6cb92794a991c6"`
Dec 19 21:55:40.436 INFO [stdout] 381f1a296f6125aedb8ec2830a72fb208d3a8dfe2c86eabe8a6cb92794a991c6