[INFO] fetching crate incremental-writer 0.1.2...
[INFO] checking incremental-writer-0.1.2 against try#38c2997544af84fe301d600d6896397738163002 for pr-154205-1
[INFO] extracting crate incremental-writer 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate incremental-writer 0.1.2
[INFO] finished tweaking crates.io crate incremental-writer 0.1.2
[INFO] tweaked toml for crates.io crate incremental-writer 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate incremental-writer 0.1.2 on toolchain 38c2997544af84fe301d600d6896397738163002
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate incremental-writer 0.1.2 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" "+38c2997544af84fe301d600d6896397738163002" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e608dd064bc741cd7feff74a45a8a132e24f5571946e51736716ff4fcb49404
[INFO] running `Command { std: "docker" "start" "-a" "4e608dd064bc741cd7feff74a45a8a132e24f5571946e51736716ff4fcb49404", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e608dd064bc741cd7feff74a45a8a132e24f5571946e51736716ff4fcb49404", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e608dd064bc741cd7feff74a45a8a132e24f5571946e51736716ff4fcb49404", kill_on_drop: false }`
[INFO] [stdout] 4e608dd064bc741cd7feff74a45a8a132e24f5571946e51736716ff4fcb49404
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+38c2997544af84fe301d600d6896397738163002" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cce3e7461a990cda6006c0aa8085afe5098bf02c69e387f859137ce119521ecd
[INFO] running `Command { std: "docker" "start" "-a" "cce3e7461a990cda6006c0aa8085afe5098bf02c69e387f859137ce119521ecd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking incremental-writer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] [FMTARGS] {"crate":"incremental_writer","loc":"src/json/mod.rs:55:17","p":4,"ph":3,"wa":0,"pa":0,"a":3,"pos":3,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":3,"a_opt":3,"sz_no_dedup":48,"sz_old":48,"sz_opt":48}
[INFO] [stderr] [FMTARGS] {"crate":"incremental_writer","loc":"src/json/mod.rs:55:17","p":4,"ph":3,"wa":0,"pa":0,"a":3,"pos":3,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":3,"a_opt":3,"sz_no_dedup":48,"sz_old":48,"sz_opt":48}
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]    --> src/json/mod.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | struct Record { 
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.54s
[INFO] running `Command { std: "docker" "inspect" "cce3e7461a990cda6006c0aa8085afe5098bf02c69e387f859137ce119521ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cce3e7461a990cda6006c0aa8085afe5098bf02c69e387f859137ce119521ecd", kill_on_drop: false }`
[INFO] [stdout] cce3e7461a990cda6006c0aa8085afe5098bf02c69e387f859137ce119521ecd