[INFO] fetching crate jsona 0.6.0...
[INFO] checking jsona-0.6.0 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate jsona 0.6.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate jsona 0.6.0
[INFO] finished tweaking crates.io crate jsona 0.6.0
[INFO] tweaked toml for crates.io crate jsona 0.6.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate jsona 0.6.0 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate jsona 0.6.0 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded text-size v1.1.0
[INFO] [stderr]   Downloaded rowan v0.15.8
[INFO] [stderr]   Downloaded arc-swap v1.5.1
[INFO] [stderr]   Downloaded indexmap v1.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62a441367a1db1c7ccce2607644df5f085d78ba7e2647f78739ddb52ec3f0aa5
[INFO] running `Command { std: "docker" "start" "-a" "62a441367a1db1c7ccce2607644df5f085d78ba7e2647f78739ddb52ec3f0aa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62a441367a1db1c7ccce2607644df5f085d78ba7e2647f78739ddb52ec3f0aa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62a441367a1db1c7ccce2607644df5f085d78ba7e2647f78739ddb52ec3f0aa5", kill_on_drop: false }`
[INFO] [stdout] 62a441367a1db1c7ccce2607644df5f085d78ba7e2647f78739ddb52ec3f0aa5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2926258a62c74a3a7770338624d6ae434d1ee430cb4cc4dd379cf8fef0c1fcbe
[INFO] running `Command { std: "docker" "start" "-a" "2926258a62c74a3a7770338624d6ae434d1ee430cb4cc4dd379cf8fef0c1fcbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking text-size v1.1.0
[INFO] [stderr]     Checking countme v3.0.1
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]     Checking arc-swap v1.5.1
[INFO] [stderr]     Checking rowan v0.15.8
[INFO] [stderr]    Compiling logos-derive v0.12.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.34
[INFO] [stderr]     Checking thiserror v1.0.34
[INFO] [stderr]     Checking logos v0.12.1
[INFO] [stderr]     Checking jsona v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `syntax` is never read
[INFO] [stdout]  --> src/dom/error.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     InvalidNode { syntax: SyntaxElement },
[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 `syntax` is never read
[INFO] [stdout]   --> src/dom/error.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |     InvalidString { syntax: SyntaxElement },
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `syntax` is never read
[INFO] [stdout]   --> src/dom/error.rs:12:21
[INFO] [stdout]    |
[INFO] [stdout] 12 |     InvalidNumber { syntax: SyntaxElement },
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `key` is never read
[INFO] [stdout]   --> src/dom/error.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |     ConflictingKeys { key: Key, other_key: Key },
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `other_key` is never read
[INFO] [stdout]   --> src/dom/error.rs:14:33
[INFO] [stdout]    |
[INFO] [stdout] 14 |     ConflictingKeys { key: Key, other_key: Key },
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `errors` is never read
[INFO] [stdout]  --> src/error.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |     InvalidSyntax { errors: Vec<crate::parser::Error> },
[INFO] [stdout]   |                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `errors` is never read
[INFO] [stdout]   --> src/error.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 |     InvalidDom { errors: Vec<DomError> },
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `syntax` is never read
[INFO] [stdout]  --> src/dom/error.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     InvalidNode { syntax: SyntaxElement },
[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 `syntax` is never read
[INFO] [stdout]   --> src/dom/error.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |     InvalidString { syntax: SyntaxElement },
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `syntax` is never read
[INFO] [stdout]   --> src/dom/error.rs:12:21
[INFO] [stdout]    |
[INFO] [stdout] 12 |     InvalidNumber { syntax: SyntaxElement },
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `key` is never read
[INFO] [stdout]   --> src/dom/error.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |     ConflictingKeys { key: Key, other_key: Key },
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `other_key` is never read
[INFO] [stdout]   --> src/dom/error.rs:14:33
[INFO] [stdout]    |
[INFO] [stdout] 14 |     ConflictingKeys { key: Key, other_key: Key },
[INFO] [stdout]    |                                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `errors` is never read
[INFO] [stdout]  --> src/error.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |     InvalidSyntax { errors: Vec<crate::parser::Error> },
[INFO] [stdout]   |                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `errors` is never read
[INFO] [stdout]   --> src/error.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 |     InvalidDom { errors: Vec<DomError> },
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/util/mapper.rs:46:27
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct CharacterRange(u64, u64);
[INFO] [stdout]    |            -------------- ^^^  ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `CharacterRange` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dom/visitor.rs:88:32
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub fn visit_annotations(node: &Node) -> Visitor<()> {
[INFO] [stdout]    |                                ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub fn visit_annotations(node: &Node) -> Visitor<'_, ()> {
[INFO] [stdout]    |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/util/mapper.rs:46:27
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct CharacterRange(u64, u64);
[INFO] [stdout]    |            -------------- ^^^  ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `CharacterRange` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dom/visitor.rs:88:32
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub fn visit_annotations(node: &Node) -> Visitor<()> {
[INFO] [stdout]    |                                ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub fn visit_annotations(node: &Node) -> Visitor<'_, ()> {
[INFO] [stdout]    |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.32s
[INFO] running `Command { std: "docker" "inspect" "2926258a62c74a3a7770338624d6ae434d1ee430cb4cc4dd379cf8fef0c1fcbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2926258a62c74a3a7770338624d6ae434d1ee430cb4cc4dd379cf8fef0c1fcbe", kill_on_drop: false }`
[INFO] [stdout] 2926258a62c74a3a7770338624d6ae434d1ee430cb4cc4dd379cf8fef0c1fcbe
