[INFO] fetching crate rust_json_parser 1.0.1...
[INFO] testing rust_json_parser-1.0.1 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate rust_json_parser 1.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rust_json_parser 1.0.1
[INFO] finished tweaking crates.io crate rust_json_parser 1.0.1
[INFO] tweaked toml for crates.io crate rust_json_parser 1.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_json_parser 1.0.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "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" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to highest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965
[INFO] running `Command { std: "docker" "start" "d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling zmij v1.0.23
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling rust_json_parser v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Value`
[INFO] [stdout]  --> src/lib.rs:1:39
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde_json::{from_str, to_string, Value};
[INFO] [stdout]   |                                       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: serde::Serialize` is not satisfied
[INFO] [stdout]     --> src/lib.rs:8:28
[INFO] [stdout]      |
[INFO] [stdout]    8 |     let result = to_string(&parsed_json).map_err(|e| format!("Failed to serialize JSON: {}", e))?;
[INFO] [stdout]      |                  --------- ^^^^^^^^^^^^ the trait `serde_core::ser::Serialize` is not implemented for `!`
[INFO] [stdout]      |                  |
[INFO] [stdout]      |                  required by a bound introduced by this call
[INFO] [stdout]      |
[INFO] [stdout]      = note: for local types consider adding `#[derive(serde::Serialize)]` to your `!` type
[INFO] [stdout]      = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]      = help: the following other types implement trait `serde_core::ser::Serialize`:
[INFO] [stdout]                &'a T
[INFO] [stdout]                &'a mut T
[INFO] [stdout]                ()
[INFO] [stdout]                (T,)
[INFO] [stdout]                (T0, T1)
[INFO] [stdout]                (T0, T1, T2)
[INFO] [stdout]                (T0, T1, T2, T3)
[INFO] [stdout]                (T0, T1, T2, T3, T4)
[INFO] [stdout]              and 128 others
[INFO] [stdout]      = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]      = help: you might have intended to use the type `()` here instead
[INFO] [stdout] note: required by a bound in `serde_json::to_string`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.151/src/ser.rs:2247:17
[INFO] [stdout]      |
[INFO] [stdout] 2245 | pub fn to_string<T>(value: &T) -> Result<String>
[INFO] [stdout] 2246 | where
[INFO] [stdout] 2247 |     T: ?Sized + Serialize,
[INFO] [stdout]      |                 ^^^^^^^^^ required by this bound in `to_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: serde::Deserialize<'de>` is not satisfied
[INFO] [stdout]     --> src/lib.rs:6:23
[INFO] [stdout]      |
[INFO] [stdout]    6 |     let parsed_json = from_str(json_str).map_err(|e| format!("Failed to parse JSON: {}", e))?;
[INFO] [stdout]      |                       ^^^^^^^^^^^^^^^^^^ the trait `serde_core::de::Deserialize<'_>` is not implemented for `!`
[INFO] [stdout]      |
[INFO] [stdout]      = note: for local types consider adding `#[derive(serde::Deserialize)]` to your `!` type
[INFO] [stdout]      = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]      = help: the following other types implement trait `serde_core::de::Deserialize<'de>`:
[INFO] [stdout]                &'a Path
[INFO] [stdout]                &'a [u8]
[INFO] [stdout]                &'a str
[INFO] [stdout]                ()
[INFO] [stdout]                (T,)
[INFO] [stdout]                (T0, T1)
[INFO] [stdout]                (T0, T1, T2)
[INFO] [stdout]                (T0, T1, T2, T3)
[INFO] [stdout]              and 140 others
[INFO] [stdout]      = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]      = help: you might have intended to use the type `()` here instead
[INFO] [stdout] note: required by a bound in `serde_json::from_str`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.151/src/de.rs:2711:8
[INFO] [stdout]      |
[INFO] [stdout] 2709 | pub fn from_str<'a, T>(s: &'a str) -> Result<T>
[INFO] [stdout] 2710 | where
[INFO] [stdout] 2711 |     T: de::Deserialize<'a>,
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^ required by this bound in `from_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_json_parser` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965", kill_on_drop: false }`
[INFO] [stdout] d421a108c11012e80e69e0079bbd81e58ce3050769b01d4b690b5bce7c9cc965
