[INFO] fetching crate rust_json_parser 1.0.1...
[INFO] checking rust_json_parser-1.0.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate rust_json_parser 1.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rust_json_parser 1.0.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ab5009bd568d02ade2b65073506a3798e5f2204f09a6d54f711305304cb483d
[INFO] running `Command { std: "docker" "start" "-a" "7ab5009bd568d02ade2b65073506a3798e5f2204f09a6d54f711305304cb483d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ab5009bd568d02ade2b65073506a3798e5f2204f09a6d54f711305304cb483d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ab5009bd568d02ade2b65073506a3798e5f2204f09a6d54f711305304cb483d", kill_on_drop: false }`
[INFO] [stdout] 7ab5009bd568d02ade2b65073506a3798e5f2204f09a6d54f711305304cb483d
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e911050d46dd1e55be27fda75543a9f4a374e8b5758dc3a993a91ea2c8f91a9
[INFO] running `Command { std: "docker" "start" "-a" "0e911050d46dd1e55be27fda75543a9f4a374e8b5758dc3a993a91ea2c8f91a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stderr]     Checking 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn parse_json_string(json_str: &str) -> Result<String, String> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]   = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: serde::ser::Serialize` will fail
[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]   |                            ^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn parse_json_string(json_str: &str) -> Result<String, String> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]   = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: serde::ser::Serialize` will fail
[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]   |                            ^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.65s
[INFO] running `Command { std: "docker" "inspect" "0e911050d46dd1e55be27fda75543a9f4a374e8b5758dc3a993a91ea2c8f91a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e911050d46dd1e55be27fda75543a9f4a374e8b5758dc3a993a91ea2c8f91a9", kill_on_drop: false }`
[INFO] [stdout] 0e911050d46dd1e55be27fda75543a9f4a374e8b5758dc3a993a91ea2c8f91a9
[INFO] checking rust_json_parser-1.0.1 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate rust_json_parser 1.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate rust_json_parser 1.0.1 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 221fc374bb324305564b205a3e6a5c124d0388ca56c8b0e65eb83cdc8c843566
[INFO] running `Command { std: "docker" "start" "-a" "221fc374bb324305564b205a3e6a5c124d0388ca56c8b0e65eb83cdc8c843566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "221fc374bb324305564b205a3e6a5c124d0388ca56c8b0e65eb83cdc8c843566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "221fc374bb324305564b205a3e6a5c124d0388ca56c8b0e65eb83cdc8c843566", kill_on_drop: false }`
[INFO] [stdout] 221fc374bb324305564b205a3e6a5c124d0388ca56c8b0e65eb83cdc8c843566
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c49312f26db43f431af912fb0479664ed4830722323039c6738168d9c90c80f
[INFO] running `Command { std: "docker" "start" "-a" "4c49312f26db43f431af912fb0479664ed4830722323039c6738168d9c90c80f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stderr]     Checking 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn parse_json_string(json_str: &str) -> Result<String, String> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]   = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: serde::ser::Serialize` will fail
[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]   |                            ^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn parse_json_string(json_str: &str) -> Result<String, String> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]   = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: serde::ser::Serialize` will fail
[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]   |                            ^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(dependency_on_unit_never_type_fallback)]` 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 3.58s
[INFO] running `Command { std: "docker" "inspect" "4c49312f26db43f431af912fb0479664ed4830722323039c6738168d9c90c80f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c49312f26db43f431af912fb0479664ed4830722323039c6738168d9c90c80f", kill_on_drop: false }`
[INFO] [stdout] 4c49312f26db43f431af912fb0479664ed4830722323039c6738168d9c90c80f