[INFO] fetching crate stack-machine 0.1.0...
[INFO] testing stack-machine-0.1.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate stack-machine 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate stack-machine 0.1.0
[INFO] finished tweaking crates.io crate stack-machine 0.1.0
[INFO] tweaked toml for crates.io crate stack-machine 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stack-machine 0.1.0 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate stack-machine 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad95d0b1c2df798217e659734be19141fed3202960077d8af603c8a53a14c28c
[INFO] running `Command { std: "docker" "start" "-a" "ad95d0b1c2df798217e659734be19141fed3202960077d8af603c8a53a14c28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad95d0b1c2df798217e659734be19141fed3202960077d8af603c8a53a14c28c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad95d0b1c2df798217e659734be19141fed3202960077d8af603c8a53a14c28c", kill_on_drop: false }`
[INFO] [stdout] ad95d0b1c2df798217e659734be19141fed3202960077d8af603c8a53a14c28c
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a1ef5f8f6a25056e00f735c4f3bf50a0c0a3ac85a7c0fa0ba8923773a072f49
[INFO] running `Command { std: "docker" "start" "-a" "3a1ef5f8f6a25056e00f735c4f3bf50a0c0a3ac85a7c0fa0ba8923773a072f49", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `mut1_err` is never used
[INFO] [stdout]   --> src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | trait SpecialStack {
[INFO] [stdout]    |       ------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn mut1_err(&mut self, f: fn(i64) -> Result<Vec<i64>, String>) -> StackResponse;
[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 0.64s
[INFO] running `Command { std: "docker" "inspect" "3a1ef5f8f6a25056e00f735c4f3bf50a0c0a3ac85a7c0fa0ba8923773a072f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a1ef5f8f6a25056e00f735c4f3bf50a0c0a3ac85a7c0fa0ba8923773a072f49", kill_on_drop: false }`
[INFO] [stdout] 3a1ef5f8f6a25056e00f735c4f3bf50a0c0a3ac85a7c0fa0ba8923773a072f49
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 720b2a41a446400e365b89b8ad5fc0e542d587492841bb1188c24b32e9033bac
[INFO] running `Command { std: "docker" "start" "-a" "720b2a41a446400e365b89b8ad5fc0e542d587492841bb1188c24b32e9033bac", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `mut1_err` is never used
[INFO] [stdout]   --> src/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | trait SpecialStack {
[INFO] [stdout]    |       ------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn mut1_err(&mut self, f: fn(i64) -> Result<Vec<i64>, String>) -> StackResponse;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "720b2a41a446400e365b89b8ad5fc0e542d587492841bb1188c24b32e9033bac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "720b2a41a446400e365b89b8ad5fc0e542d587492841bb1188c24b32e9033bac", kill_on_drop: false }`
[INFO] [stdout] 720b2a41a446400e365b89b8ad5fc0e542d587492841bb1188c24b32e9033bac
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c996dee148be9cc916c5326062daba1d6c4db846a6fe7d01a6b14a2421e43c77
[INFO] running `Command { std: "docker" "start" "-a" "c996dee148be9cc916c5326062daba1d6c4db846a6fe7d01a6b14a2421e43c77", kill_on_drop: false }`
[INFO] [stderr] warning: method `mut1_err` is never used
[INFO] [stderr]   --> src/main.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | trait SpecialStack {
[INFO] [stderr]    |       ------------ method in this trait
[INFO] [stderr] ...
[INFO] [stderr] 55 |     fn mut1_err(&mut self, f: fn(i64) -> Result<Vec<i64>, String>) -> StackResponse;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `stack-machine` (bin "stack-machine" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/stack_machine-952454ca56ff3b67)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c996dee148be9cc916c5326062daba1d6c4db846a6fe7d01a6b14a2421e43c77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c996dee148be9cc916c5326062daba1d6c4db846a6fe7d01a6b14a2421e43c77", kill_on_drop: false }`
[INFO] [stdout] c996dee148be9cc916c5326062daba1d6c4db846a6fe7d01a6b14a2421e43c77