[INFO] cloning repository https://github.com/PinkiePie1189/rust-rewriter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PinkiePie1189/rust-rewriter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPinkiePie1189%2Frust-rewriter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPinkiePie1189%2Frust-rewriter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a6a2e4ae6deff013ddd4c665a9eda0f86e3910e
[INFO] checking PinkiePie1189/rust-rewriter against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPinkiePie1189%2Frust-rewriter" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/PinkiePie1189/rust-rewriter
[INFO] finished tweaking git repo https://github.com/PinkiePie1189/rust-rewriter
[INFO] tweaked toml for git repo https://github.com/PinkiePie1189/rust-rewriter written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/PinkiePie1189/rust-rewriter on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/PinkiePie1189/rust-rewriter 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 866305dfa69833e49613dd75e45df8d270f9f2712840df02eba34aadaaa8b3a9
[INFO] running `Command { std: "docker" "start" "-a" "866305dfa69833e49613dd75e45df8d270f9f2712840df02eba34aadaaa8b3a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "866305dfa69833e49613dd75e45df8d270f9f2712840df02eba34aadaaa8b3a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "866305dfa69833e49613dd75e45df8d270f9f2712840df02eba34aadaaa8b3a9", kill_on_drop: false }`
[INFO] [stdout] 866305dfa69833e49613dd75e45df8d270f9f2712840df02eba34aadaaa8b3a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a997d7a4a18e0448b72aa66c2d706ba921f264c544f8b1303d54438b3f54c09f
[INFO] running `Command { std: "docker" "start" "-a" "a997d7a4a18e0448b72aa66c2d706ba921f264c544f8b1303d54438b3f54c09f", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]     Checking unicode-ident v1.0.16
[INFO] [stderr]     Checking quote v1.0.38
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking syn v2.0.96
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking rust_rewriter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `env::args` and `fmt::format`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{env::args, fmt::format, fs};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Receiver` and `token::Struct`
[INFO] [stdout]  --> src/main.rs:4:41
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{parse_file, spanned::Spanned, token::Struct, Field, Ident, Item, Receiver, ReturnType};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_bigint::BigUint`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_bigint::BigUint;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `env::args` and `fmt::format`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{env::args, fmt::format, fs};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Receiver` and `token::Struct`
[INFO] [stdout]  --> src/main.rs:4:41
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{parse_file, spanned::Spanned, token::Struct, Field, Ident, Item, Receiver, ReturnType};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_bigint::BigUint`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_bigint::BigUint;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `SingleValueMapper` is never constructed
[INFO] [stdout]   --> src/main.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct SingleValueMapper<T>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_rewriter` (bin "rust_rewriter") due to 1 previous error; 3 warnings emitted
[INFO] [stdout] error: struct `SingleValueMapper` is never constructed
[INFO] [stdout]   --> src/main.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct SingleValueMapper<T>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_rewriter` (bin "rust_rewriter" test) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a997d7a4a18e0448b72aa66c2d706ba921f264c544f8b1303d54438b3f54c09f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a997d7a4a18e0448b72aa66c2d706ba921f264c544f8b1303d54438b3f54c09f", kill_on_drop: false }`
[INFO] [stdout] a997d7a4a18e0448b72aa66c2d706ba921f264c544f8b1303d54438b3f54c09f
