[INFO] fetching crate pretty_goodness 0.1.1...
[INFO] building pretty_goodness-0.1.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate pretty_goodness 0.1.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate pretty_goodness 0.1.1
[INFO] finished tweaking crates.io crate pretty_goodness 0.1.1
[INFO] tweaked toml for crates.io crate pretty_goodness 0.1.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pretty_goodness 0.1.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding corlib v0.1.0 (available: v0.4.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80a55bbeae66fe9a96051e95ae22d6e7753a90608c545a6b20a6bae6e86f95e0
[INFO] running `Command { std: "docker" "start" "-a" "80a55bbeae66fe9a96051e95ae22d6e7753a90608c545a6b20a6bae6e86f95e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80a55bbeae66fe9a96051e95ae22d6e7753a90608c545a6b20a6bae6e86f95e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80a55bbeae66fe9a96051e95ae22d6e7753a90608c545a6b20a6bae6e86f95e0", kill_on_drop: false }`
[INFO] [stdout] 80a55bbeae66fe9a96051e95ae22d6e7753a90608c545a6b20a6bae6e86f95e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a7bc93d95d6b6a9953e76fbdafb1a45d9117c8b825ff28232f8acf794f087e9
[INFO] running `Command { std: "docker" "start" "-a" "9a7bc93d95d6b6a9953e76fbdafb1a45d9117c8b825ff28232f8acf794f087e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling delegate v0.13.4
[INFO] [stderr]    Compiling corlib v0.1.0
[INFO] [stderr]    Compiling pretty_goodness v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `default` and `vec::Vec`
[INFO] [stdout]  --> src/json/pretty_er.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{vec::Vec, default, str::Chars};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:146:25
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:169:25
[INFO] [stdout]     |
[INFO] [stdout] 169 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:194:25
[INFO] [stdout]     |
[INFO] [stdout] 194 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:246:25
[INFO] [stdout]     |
[INFO] [stdout] 246 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `FoundEndOfString`, `FoundEndOfValue`, and `CompletedValue` are never constructed
[INFO] [stdout]   --> src/json/pretty_er.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum LastAction
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 38 |     FoundEndOfString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 39 |     FoundEndOfValue,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     CompletedValue
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.04s
[INFO] running `Command { std: "docker" "inspect" "9a7bc93d95d6b6a9953e76fbdafb1a45d9117c8b825ff28232f8acf794f087e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a7bc93d95d6b6a9953e76fbdafb1a45d9117c8b825ff28232f8acf794f087e9", kill_on_drop: false }`
[INFO] [stdout] 9a7bc93d95d6b6a9953e76fbdafb1a45d9117c8b825ff28232f8acf794f087e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a529df9faae20c2862228dbcf8edac39dcb7be9da8a0131a8f35c3bb72179311
[INFO] running `Command { std: "docker" "start" "-a" "a529df9faae20c2862228dbcf8edac39dcb7be9da8a0131a8f35c3bb72179311", kill_on_drop: false }`
[INFO] [stderr]    Compiling pretty_goodness v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `default` and `vec::Vec`
[INFO] [stdout]  --> src/json/pretty_er.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{vec::Vec, default, str::Chars};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:146:25
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:169:25
[INFO] [stdout]     |
[INFO] [stdout] 169 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:194:25
[INFO] [stdout]     |
[INFO] [stdout] 194 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:246:25
[INFO] [stdout]     |
[INFO] [stdout] 246 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `FoundEndOfString`, `FoundEndOfValue`, and `CompletedValue` are never constructed
[INFO] [stdout]   --> src/json/pretty_er.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum LastAction
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 38 |     FoundEndOfString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 39 |     FoundEndOfValue,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     CompletedValue
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `default` and `vec::Vec`
[INFO] [stdout]  --> src/json/pretty_er.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{vec::Vec, default, str::Chars};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:146:25
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:169:25
[INFO] [stdout]     |
[INFO] [stdout] 169 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:194:25
[INFO] [stdout]     |
[INFO] [stdout] 194 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `has_previous_object` is never read
[INFO] [stdout]    --> src/json/pretty_er.rs:246:25
[INFO] [stdout]     |
[INFO] [stdout] 246 |                         has_previous_object = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `FoundEndOfString`, `FoundEndOfValue`, and `CompletedValue` are never constructed
[INFO] [stdout]   --> src/json/pretty_er.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum LastAction
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 38 |     FoundEndOfString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 39 |     FoundEndOfValue,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     CompletedValue
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "a529df9faae20c2862228dbcf8edac39dcb7be9da8a0131a8f35c3bb72179311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a529df9faae20c2862228dbcf8edac39dcb7be9da8a0131a8f35c3bb72179311", kill_on_drop: false }`
[INFO] [stdout] a529df9faae20c2862228dbcf8edac39dcb7be9da8a0131a8f35c3bb72179311