[INFO] fetching crate serde-value 0.7.0...
[INFO] checking serde-value-0.7.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate serde-value 0.7.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate serde-value 0.7.0
[INFO] finished tweaking crates.io crate serde-value 0.7.0
[INFO] tweaked toml for crates.io crate serde-value 0.7.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde-value 0.7.0 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 9 packages to latest compatible versions
[INFO] [stderr]       Adding ordered-float v2.10.1 (available: v5.0.0)
[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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4358b4481373f56df55fd7864c398bba59486753f8bea0d95587b3912919da23
[INFO] running `Command { std: "docker" "start" "-a" "4358b4481373f56df55fd7864c398bba59486753f8bea0d95587b3912919da23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4358b4481373f56df55fd7864c398bba59486753f8bea0d95587b3912919da23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4358b4481373f56df55fd7864c398bba59486753f8bea0d95587b3912919da23", kill_on_drop: false }`
[INFO] [stdout] 4358b4481373f56df55fd7864c398bba59486753f8bea0d95587b3912919da23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 743fe4031f1aafc926a48b363c9f2c5a5a9a3b2f655d1f1801303999dc86e074
[INFO] running `Command { std: "docker" "start" "-a" "743fe4031f1aafc926a48b363c9f2c5a5a9a3b2f655d1f1801303999dc86e074", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking serde-value v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:152:19
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn unexpected(&self) -> serde::de::Unexpected {
[INFO] [stdout]     |                   ^^^^^     --------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn unexpected(&self) -> serde::de::Unexpected<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:152:19
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn unexpected(&self) -> serde::de::Unexpected {
[INFO] [stdout]     |                   ^^^^^     --------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn unexpected(&self) -> serde::de::Unexpected<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.90s
[INFO] running `Command { std: "docker" "inspect" "743fe4031f1aafc926a48b363c9f2c5a5a9a3b2f655d1f1801303999dc86e074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "743fe4031f1aafc926a48b363c9f2c5a5a9a3b2f655d1f1801303999dc86e074", kill_on_drop: false }`
[INFO] [stdout] 743fe4031f1aafc926a48b363c9f2c5a5a9a3b2f655d1f1801303999dc86e074