[INFO] fetching crate tyson 0.1.0...
[INFO] checking tyson-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate tyson 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate tyson 0.1.0
[INFO] finished tweaking crates.io crate tyson 0.1.0
[INFO] tweaked toml for crates.io crate tyson 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tyson 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 937952a119fa5d6f37648936f6031776bc762c45e85690c154810f735cb7e8b6
[INFO] running `Command { std: "docker" "start" "-a" "937952a119fa5d6f37648936f6031776bc762c45e85690c154810f735cb7e8b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "937952a119fa5d6f37648936f6031776bc762c45e85690c154810f735cb7e8b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "937952a119fa5d6f37648936f6031776bc762c45e85690c154810f735cb7e8b6", kill_on_drop: false }`
[INFO] [stdout] 937952a119fa5d6f37648936f6031776bc762c45e85690c154810f735cb7e8b6
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d2ac6e4d593abebb47cfcbc784121d71afb5fb5e5955f439528391852069c7a
[INFO] running `Command { std: "docker" "start" "-a" "4d2ac6e4d593abebb47cfcbc784121d71afb5fb5e5955f439528391852069c7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]     Checking custom_error v1.9.2
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]     Checking pest v2.8.1
[INFO] [stderr]    Compiling pest_meta v2.8.1
[INFO] [stderr]    Compiling pest_generator v2.8.1
[INFO] [stderr]    Compiling pest_derive v2.8.1
[INFO] [stderr]     Checking tyson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `msg` is never read
[INFO] [stdout]  --> src/errors.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TySONError {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     msg: String,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TySONError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `msg` is never read
[INFO] [stdout]  --> src/errors.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TySONError {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     msg: String,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TySONError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.33s
[INFO] running `Command { std: "docker" "inspect" "4d2ac6e4d593abebb47cfcbc784121d71afb5fb5e5955f439528391852069c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d2ac6e4d593abebb47cfcbc784121d71afb5fb5e5955f439528391852069c7a", kill_on_drop: false }`
[INFO] [stdout] 4d2ac6e4d593abebb47cfcbc784121d71afb5fb5e5955f439528391852069c7a