[INFO] fetching crate binserde 0.1.7...
[INFO] checking binserde-0.1.7 against try#0edd13c68435d50367c79cef43ac2768d2ec4f3d for pr-129422
[INFO] extracting crate binserde 0.1.7 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate binserde 0.1.7 on toolchain 0edd13c68435d50367c79cef43ac2768d2ec4f3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate binserde 0.1.7
[INFO] finished tweaking crates.io crate binserde 0.1.7
[INFO] tweaked toml for crates.io crate binserde 0.1.7 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding darling v0.10.2 (latest: v0.20.10)
[INFO] [stderr]       Adding darling_core v0.10.2 (latest: v0.20.10)
[INFO] [stderr]       Adding darling_macro v0.10.2 (latest: v0.20.10)
[INFO] [stderr]       Adding strsim v0.9.3 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e64854d1da5df21071b91f87147526b9c6e637eb6cbfda7ae76e073536da0af
[INFO] running `Command { std: "docker" "start" "-a" "0e64854d1da5df21071b91f87147526b9c6e637eb6cbfda7ae76e073536da0af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e64854d1da5df21071b91f87147526b9c6e637eb6cbfda7ae76e073536da0af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e64854d1da5df21071b91f87147526b9c6e637eb6cbfda7ae76e073536da0af", kill_on_drop: false }`
[INFO] [stdout] 0e64854d1da5df21071b91f87147526b9c6e637eb6cbfda7ae76e073536da0af
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91d7c7bbcb553ee44d93f8d800a093973cf552b83d8981fc26680d9135a0fdce
[INFO] running `Command { std: "docker" "start" "-a" "91d7c7bbcb553ee44d93f8d800a093973cf552b83d8981fc26680d9135a0fdce", kill_on_drop: false }`
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling binserde_derive v0.1.4
[INFO] [stderr]     Checking binserde v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/util.rs:54:29
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn serialize_iter<I, S>(mut iter: I, mut serializer: S) -> Result<()>
[INFO] [stdout]    |                             ----^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_str` is never used
[INFO] [stdout]   --> src/write_ext.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub trait WriteExt {
[INFO] [stdout]    |           -------- method in this trait
[INFO] [stdout] 10 |     fn write_str(&mut self, s: &str) -> Result<usize>;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_str` is never used
[INFO] [stdout]   --> src/write_ext.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub trait ReadExt {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 40 |     fn read_str(&mut self) -> Result<String>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/util.rs:54:29
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn serialize_iter<I, S>(mut iter: I, mut serializer: S) -> Result<()>
[INFO] [stdout]    |                             ----^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_str` is never used
[INFO] [stdout]   --> src/write_ext.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub trait WriteExt {
[INFO] [stdout]    |           -------- method in this trait
[INFO] [stdout] 10 |     fn write_str(&mut self, s: &str) -> Result<usize>;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_str` is never used
[INFO] [stdout]   --> src/write_ext.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub trait ReadExt {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 40 |     fn read_str(&mut self) -> Result<String>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.83s
[INFO] running `Command { std: "docker" "inspect" "91d7c7bbcb553ee44d93f8d800a093973cf552b83d8981fc26680d9135a0fdce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91d7c7bbcb553ee44d93f8d800a093973cf552b83d8981fc26680d9135a0fdce", kill_on_drop: false }`
[INFO] [stdout] 91d7c7bbcb553ee44d93f8d800a093973cf552b83d8981fc26680d9135a0fdce