[INFO] updating cached repository https://github.com/leitingtod/jungle
[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] d0953d5af111aaca6cac9863e19562a96df4df15
[INFO] testing leitingtod/jungle against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleitingtod%2Fjungle" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leitingtod/jungle on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/leitingtod/jungle
[INFO] finished tweaking git repo https://github.com/leitingtod/jungle
[INFO] tweaked toml for git repo https://github.com/leitingtod/jungle written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/leitingtod/jungle already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dbbe100631b205f78c89ccd41f921352eaeb65f9eba984e5a19941410bdd52c7
[INFO] running `"docker" "start" "-a" "dbbe100631b205f78c89ccd41f921352eaeb65f9eba984e5a19941410bdd52c7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]    Compiling open v1.3.1
[INFO] [stderr]    Compiling pest v2.1.1
[INFO] [stderr]    Compiling getopts v0.2.19
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling regex-syntax v0.6.10
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling backtrace v0.3.33
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling handlebars v2.0.1
[INFO] [stderr]    Compiling pretty_env_logger v0.3.0
[INFO] [stderr]    Compiling jungle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]  --> src/book/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde_json::to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `make_book_data`
[INFO] [stderr]  --> src/book/mod.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::render::{make_book_data, render_book, render_summary, RenderContext};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/book.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/book/summary.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/summary.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/render/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/render/mod.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{File, read_to_string};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/render/mod.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Context`, `Helper`, `Output`, `RenderError`, `to_json`
[INFO] [stderr]  --> src/render/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |     ^^^^^^^              ^^^^^^              ^^^^^^  ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]   --> src/render/mod.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use serde_json::to_string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `load_file_contents`
[INFO] [stderr]   --> src/render/mod.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::utils::{load_file_contents, write_file};
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/theme/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::load_file_contents`
[INFO] [stderr]  --> src/theme/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::load_file_contents;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `JsonRender`
[INFO] [stderr]  --> src/render/mod.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 11s
[INFO] running `"docker" "inspect" "dbbe100631b205f78c89ccd41f921352eaeb65f9eba984e5a19941410bdd52c7"`
[INFO] running `"docker" "rm" "-f" "dbbe100631b205f78c89ccd41f921352eaeb65f9eba984e5a19941410bdd52c7"`
[INFO] [stdout] dbbe100631b205f78c89ccd41f921352eaeb65f9eba984e5a19941410bdd52c7
[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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bdc6557ff9b7ab2a01dcb6c06ee57eed360908314cccf3a86b85f23cb1be3b14
[INFO] running `"docker" "start" "-a" "bdc6557ff9b7ab2a01dcb6c06ee57eed360908314cccf3a86b85f23cb1be3b14"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling jungle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]  --> src/book/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde_json::to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `make_book_data`
[INFO] [stderr]  --> src/book/mod.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::render::{make_book_data, render_book, render_summary, RenderContext};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/book.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/book/summary.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/summary.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/render/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/render/mod.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{File, read_to_string};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/render/mod.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Context`, `Helper`, `Output`, `RenderError`, `to_json`
[INFO] [stderr]  --> src/render/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |     ^^^^^^^              ^^^^^^              ^^^^^^  ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]   --> src/render/mod.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use serde_json::to_string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `load_file_contents`
[INFO] [stderr]   --> src/render/mod.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::utils::{load_file_contents, write_file};
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/theme/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::load_file_contents`
[INFO] [stderr]  --> src/theme/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::load_file_contents;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `JsonRender`
[INFO] [stderr]  --> src/render/mod.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]  --> src/book/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde_json::to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `make_book_data`
[INFO] [stderr]  --> src/book/mod.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::render::{make_book_data, render_book, render_summary, RenderContext};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/book.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/book/summary.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/summary.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/render/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/render/mod.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{File, read_to_string};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/render/mod.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Context`, `Helper`, `Output`, `RenderError`, `to_json`
[INFO] [stderr]  --> src/render/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |     ^^^^^^^              ^^^^^^              ^^^^^^  ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]   --> src/render/mod.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use serde_json::to_string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `load_file_contents`
[INFO] [stderr]   --> src/render/mod.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::utils::{load_file_contents, write_file};
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/theme/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::load_file_contents`
[INFO] [stderr]  --> src/theme/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::load_file_contents;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `JsonRender`
[INFO] [stderr]  --> src/render/mod.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `"docker" "inspect" "bdc6557ff9b7ab2a01dcb6c06ee57eed360908314cccf3a86b85f23cb1be3b14"`
[INFO] running `"docker" "rm" "-f" "bdc6557ff9b7ab2a01dcb6c06ee57eed360908314cccf3a86b85f23cb1be3b14"`
[INFO] [stdout] bdc6557ff9b7ab2a01dcb6c06ee57eed360908314cccf3a86b85f23cb1be3b14
[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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f4aa7efa8ede1395450649a75051c2b8cc7592f3ee6063619b34e0f651c6bc42
[INFO] running `"docker" "start" "-a" "f4aa7efa8ede1395450649a75051c2b8cc7592f3ee6063619b34e0f651c6bc42"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]  --> src/book/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde_json::to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `make_book_data`
[INFO] [stderr]  --> src/book/mod.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::render::{make_book_data, render_book, render_summary, RenderContext};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/book.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/book/summary.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/summary.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/render/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/render/mod.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{File, read_to_string};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/render/mod.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Context`, `Helper`, `Output`, `RenderError`, `to_json`
[INFO] [stderr]  --> src/render/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |     ^^^^^^^              ^^^^^^              ^^^^^^  ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]   --> src/render/mod.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use serde_json::to_string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `load_file_contents`
[INFO] [stderr]   --> src/render/mod.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::utils::{load_file_contents, write_file};
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/theme/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::load_file_contents`
[INFO] [stderr]  --> src/theme/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::load_file_contents;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `JsonRender`
[INFO] [stderr]  --> src/render/mod.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]  --> src/book/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde_json::to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `make_book_data`
[INFO] [stderr]  --> src/book/mod.rs:8:21
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::render::{make_book_data, render_book, render_summary, RenderContext};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/book.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/book/summary.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]  --> src/book/summary.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use walkdir::{DirEntry, WalkDir};
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/render/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/render/mod.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{File, read_to_string};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> src/render/mod.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Context`, `Helper`, `Output`, `RenderError`, `to_json`
[INFO] [stderr]  --> src/render/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |     ^^^^^^^              ^^^^^^              ^^^^^^  ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::to_string`
[INFO] [stderr]   --> src/render/mod.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use serde_json::to_string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `load_file_contents`
[INFO] [stderr]   --> src/render/mod.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::utils::{load_file_contents, write_file};
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/theme/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::load_file_contents`
[INFO] [stderr]  --> src/theme/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::load_file_contents;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     error_chain! {
[INFO] [stderr] 24 | |         foreign_links {
[INFO] [stderr] 25 | |             Io(std::io::Error) #[doc = "A wrapper around `std::io::Error`"];
[INFO] [stderr] 26 | |             HandlebarsRender(handlebars::RenderError) #[doc = "Handlebars rendering failed"];
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |         }
[INFO] [stderr] 53 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `JsonRender`
[INFO] [stderr]  --> src/render/mod.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Context, Handlebars, Helper, JsonRender, Output, RenderError, to_json,
[INFO] [stderr]   |                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.31s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/jungle-e9eaae66a040d7c0
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/jungle-6db86a7af25b880d
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests jungle
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f4aa7efa8ede1395450649a75051c2b8cc7592f3ee6063619b34e0f651c6bc42"`
[INFO] running `"docker" "rm" "-f" "f4aa7efa8ede1395450649a75051c2b8cc7592f3ee6063619b34e0f651c6bc42"`
[INFO] [stdout] f4aa7efa8ede1395450649a75051c2b8cc7592f3ee6063619b34e0f651c6bc42