[INFO] fetching crate serde_either 0.2.1...
[INFO] checking serde_either-0.2.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate serde_either 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate serde_either 0.2.1
[INFO] finished tweaking crates.io crate serde_either 0.2.1
[INFO] tweaked toml for crates.io crate serde_either 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_either 0.2.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf70395d9217dfe86e68f9336e29e299fb98afc193800e3e82efab261207af05
[INFO] running `Command { std: "docker" "start" "-a" "cf70395d9217dfe86e68f9336e29e299fb98afc193800e3e82efab261207af05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf70395d9217dfe86e68f9336e29e299fb98afc193800e3e82efab261207af05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf70395d9217dfe86e68f9336e29e299fb98afc193800e3e82efab261207af05", kill_on_drop: false }`
[INFO] [stdout] cf70395d9217dfe86e68f9336e29e299fb98afc193800e3e82efab261207af05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4661fe868ab029cf37923fc8636390356b9aa92741b51205f48e30224b96698c
[INFO] running `Command { std: "docker" "start" "-a" "4661fe868ab029cf37923fc8636390356b9aa92741b51205f48e30224b96698c", kill_on_drop: false }`
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking serde_either v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]  --> src/de.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn unexpected(value: &Value) -> 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] 8 | fn unexpected(value: &Value) -> 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/de.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn unexpected(value: &Value) -> 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] 8 | fn unexpected(value: &Value) -> Unexpected<'_> {
[INFO] [stdout]   |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&str` instead of dereferencing the inner type
[INFO] [stdout]   --> tests/common/mod.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 |             last_name: parts.last().unwrap().deref().into(),
[INFO] [stdout]    |                                             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&str` instead of dereferencing the inner type
[INFO] [stdout]   --> tests/common/mod.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 |             last_name: parts.last().unwrap().deref().into(),
[INFO] [stdout]    |                                             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.38s
[INFO] running `Command { std: "docker" "inspect" "4661fe868ab029cf37923fc8636390356b9aa92741b51205f48e30224b96698c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4661fe868ab029cf37923fc8636390356b9aa92741b51205f48e30224b96698c", kill_on_drop: false }`
[INFO] [stdout] 4661fe868ab029cf37923fc8636390356b9aa92741b51205f48e30224b96698c