[INFO] fetching crate spock 0.1.0...
[INFO] checking spock-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate spock 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate spock 0.1.0
[INFO] finished tweaking crates.io crate spock 0.1.0
[INFO] tweaked toml for crates.io crate spock 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate spock 0.1.0 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] crate crates.io crate spock 0.1.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c105af991c5925e33391f7506dbe542f18ece3008a57a22ed910a921a43289e6
[INFO] running `Command { std: "docker" "start" "-a" "c105af991c5925e33391f7506dbe542f18ece3008a57a22ed910a921a43289e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c105af991c5925e33391f7506dbe542f18ece3008a57a22ed910a921a43289e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c105af991c5925e33391f7506dbe542f18ece3008a57a22ed910a921a43289e6", kill_on_drop: false }`
[INFO] [stdout] c105af991c5925e33391f7506dbe542f18ece3008a57a22ed910a921a43289e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 6a201c1ee7d751fc5a193c6069482e433926b811506a0cbdee6d5c588260f74a
[INFO] running `Command { std: "docker" "start" "-a" "6a201c1ee7d751fc5a193c6069482e433926b811506a0cbdee6d5c588260f74a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking spock v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/logic/chemistry/element/mod.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn add(self, rhs: Self) -> Self::Output {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]  --> src/logic/chemistry/molecule/mod.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn add(self, rhs: Self) -> Self::Output {
[INFO] [stdout]   |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/logic/chemistry/molecule/mod.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn add(self, rhs: Element) -> Self::Output {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `molecule`
[INFO] [stdout]   --> src/lib.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let molecule = elements::H + elements::H;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_molecule`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `molecule`
[INFO] [stdout]   --> src/lib.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let molecule = elements::H + elements::H;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_molecule`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `atomic_number` is never read
[INFO] [stdout]   --> src/logic/chemistry/element/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Element {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 10 |     symbol: Symbol,
[INFO] [stdout] 11 |     atomic_number: AtomicNumber,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/logic/chemistry/element/mod.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn add(self, rhs: Self) -> Self::Output {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]  --> src/logic/chemistry/molecule/mod.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn add(self, rhs: Self) -> Self::Output {
[INFO] [stdout]   |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/logic/chemistry/molecule/mod.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn add(self, rhs: Element) -> Self::Output {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `atomic_number` is never read
[INFO] [stdout]   --> src/logic/chemistry/element/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Element {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 10 |     symbol: Symbol,
[INFO] [stdout] 11 |     atomic_number: AtomicNumber,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.78s
[INFO] running `Command { std: "docker" "inspect" "6a201c1ee7d751fc5a193c6069482e433926b811506a0cbdee6d5c588260f74a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a201c1ee7d751fc5a193c6069482e433926b811506a0cbdee6d5c588260f74a", kill_on_drop: false }`
[INFO] [stdout] 6a201c1ee7d751fc5a193c6069482e433926b811506a0cbdee6d5c588260f74a