[INFO] fetching crate json5format 0.2.6...
[INFO] checking json5format-0.2.6 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate json5format 0.2.6 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate json5format 0.2.6 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json5format 0.2.6
[INFO] finished tweaking crates.io crate json5format 0.2.6
[INFO] tweaked toml for crates.io crate json5format 0.2.6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate json5format 0.2.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit-set v0.5.1
[INFO] [stderr]   Downloaded hermit-abi v0.1.11
[INFO] [stderr]   Downloaded anyhow v1.0.28
[INFO] [stderr]   Downloaded bit-vec v0.5.1
[INFO] [stderr]   Downloaded libc v0.2.69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ce8dd2755fe3173ea5c5b7f3bc4c42f76195dbde51d52b9ab785c58eb85f186
[INFO] running `Command { std: "docker" "start" "-a" "2ce8dd2755fe3173ea5c5b7f3bc4c42f76195dbde51d52b9ab785c58eb85f186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ce8dd2755fe3173ea5c5b7f3bc4c42f76195dbde51d52b9ab785c58eb85f186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ce8dd2755fe3173ea5c5b7f3bc4c42f76195dbde51d52b9ab785c58eb85f186", kill_on_drop: false }`
[INFO] [stdout] 2ce8dd2755fe3173ea5c5b7f3bc4c42f76195dbde51d52b9ab785c58eb85f186
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6b4ebe274d0a254497a522cf9405d927bc845ee140887beec10568b47349097
[INFO] running `Command { std: "docker" "start" "-a" "a6b4ebe274d0a254497a522cf9405d927bc845ee140887beec10568b47349097", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking bit-vec v0.5.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking bit-set v0.5.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]     Checking json5format v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stdout] warning: methods `contained_comments` and `has_pending_comments` are never used
[INFO] [stdout]    --> src/content.rs:447:8
[INFO] [stdout]     |
[INFO] [stdout] 431 | pub(crate) trait Container {
[INFO] [stdout]     |                  --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 447 |     fn contained_comments(&self) -> &ContainedComments;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 477 |     fn has_pending_comments(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Json5Format` is imported redundantly
[INFO] [stdout]  --> tests/lib.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 |     crate::{test_error, Json5Format},
[INFO] [stdout]   |                         ^^^^^^^^^^^
[INFO] [stdout] 8 |     json5format::*,
[INFO] [stdout]   |     -------------- the item `Json5Format` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]   --> examples/formatjson5.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use anyhow;
[INFO] [stdout]    |     ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `test_error` is imported redundantly
[INFO] [stdout]    --> src/parser.rs:948:20
[INFO] [stdout]     |
[INFO] [stdout] 948 |       use {super::*, crate::test_error, proptest::prelude::*};
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/error.rs:129:1
[INFO] [stdout]     |
[INFO] [stdout] 129 | / macro_rules! test_error {
[INFO] [stdout] 130 | |     ($err:expr) => {
[INFO] [stdout] 131 | |         Error::test_failure(
[INFO] [stdout] 132 | |             Some(Location::new(Some(file!().to_string()), line!() as usize, column!() as usize)),
[INFO] [stdout] ...   |
[INFO] [stdout] 135 | |     };
[INFO] [stdout] 136 | | }
[INFO] [stdout]     | |_- the item `test_error` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `contained_comments` and `has_pending_comments` are never used
[INFO] [stdout]    --> src/content.rs:447:8
[INFO] [stdout]     |
[INFO] [stdout] 431 | pub(crate) trait Container {
[INFO] [stdout]     |                  --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 447 |     fn contained_comments(&self) -> &ContainedComments;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 477 |     fn has_pending_comments(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.66s
[INFO] running `Command { std: "docker" "inspect" "a6b4ebe274d0a254497a522cf9405d927bc845ee140887beec10568b47349097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6b4ebe274d0a254497a522cf9405d927bc845ee140887beec10568b47349097", kill_on_drop: false }`
[INFO] [stdout] a6b4ebe274d0a254497a522cf9405d927bc845ee140887beec10568b47349097