[INFO] fetching crate pink-json 0.4.0...
[INFO] testing pink-json-0.4.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate pink-json 0.4.0 into /workspace/builds/worker-5-tc1/source
[INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate pink-json 0.4.0
[INFO] finished tweaking crates.io crate pink-json 0.4.0
[INFO] tweaked toml for crates.io crate pink-json 0.4.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pink-json 0.4.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9565b6d5b506e68d38750c33ce36634925b4692ec2b34c9787a4200d328ff377
[INFO] running `Command { std: "docker" "start" "-a" "9565b6d5b506e68d38750c33ce36634925b4692ec2b34c9787a4200d328ff377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9565b6d5b506e68d38750c33ce36634925b4692ec2b34c9787a4200d328ff377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9565b6d5b506e68d38750c33ce36634925b4692ec2b34c9787a4200d328ff377", kill_on_drop: false }`
[INFO] [stdout] 9565b6d5b506e68d38750c33ce36634925b4692ec2b34c9787a4200d328ff377
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] b5ee2e649990515e5912343594037d72371ad63168dbef9e5cc57b863d4655ec
[INFO] running `Command { std: "docker" "start" "-a" "b5ee2e649990515e5912343594037d72371ad63168dbef9e5cc57b863d4655ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling pink-json v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: methods `position`, `peek_position`, `byte_offset`, `ignore_str`, and `set_failed` are never used
[INFO] [stdout]   --> src/de/read.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub trait Read<'de>: private::Sealed {
[INFO] [stdout]    |           ---- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn position(&self) -> Position;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn peek_position(&self) -> Position;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn byte_offset(&self) -> usize;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn ignore_str(&mut self) -> Result<()>;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn set_failed(&mut self, failed: &mut bool);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Position` is never constructed
[INFO] [stdout]   --> src/de/read.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct Position {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: method `position_of_index` is never used
[INFO] [stdout]    --> src/de/read.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | impl<'a> SliceRead<'a> {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 133 |     fn position_of_index(&self, i: usize) -> Position {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: function `ignore_escape` is never used
[INFO] [stdout]    --> src/de/read.rs:536:4
[INFO] [stdout]     |
[INFO] [stdout] 536 | fn ignore_escape<'de, R>(read: &mut R) -> Result<()>
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/de/mod.rs:104:20
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn new(slice: &'a [u8]) -> Deserializer<'_> {
[INFO] [stdout]     |                    ^^                       -- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(mismatched_lifetime_syntaxes)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 104 -     fn new(slice: &'a [u8]) -> Deserializer<'_> {
[INFO] [stdout] 104 +     fn new(slice: &'a [u8]) -> Deserializer<'a> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pink-json` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "b5ee2e649990515e5912343594037d72371ad63168dbef9e5cc57b863d4655ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5ee2e649990515e5912343594037d72371ad63168dbef9e5cc57b863d4655ec", kill_on_drop: false }`
[INFO] [stdout] b5ee2e649990515e5912343594037d72371ad63168dbef9e5cc57b863d4655ec