[INFO] fetching crate brain-brainfuck 1.3.0...
[INFO] testing brain-brainfuck-1.3.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate brain-brainfuck 1.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate brain-brainfuck 1.3.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate brain-brainfuck 1.3.0
[INFO] finished tweaking crates.io crate brain-brainfuck 1.3.0
[INFO] tweaked toml for crates.io crate brain-brainfuck 1.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c303899a526c86d1945b0a0b15b3ca28f4bde362b18f460fb816875c0f57eb6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7c303899a526c86d1945b0a0b15b3ca28f4bde362b18f460fb816875c0f57eb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c303899a526c86d1945b0a0b15b3ca28f4bde362b18f460fb816875c0f57eb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c303899a526c86d1945b0a0b15b3ca28f4bde362b18f460fb816875c0f57eb6", kill_on_drop: false }`
[INFO] [stdout] 7c303899a526c86d1945b0a0b15b3ca28f4bde362b18f460fb816875c0f57eb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5f56940f8d75345bbf13fc8f53c269a5ec4ef9e2e0488103e3239b2df13184cc
[INFO] running `Command { std: "docker" "start" "-a" "5f56940f8d75345bbf13fc8f53c269a5ec4ef9e2e0488103e3239b2df13184cc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling brain-brainfuck v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:100:18
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn fill_matching(mut program: &mut Vec<Instruction>, start: usize) -> usize {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.70s
[INFO] running `Command { std: "docker" "inspect" "5f56940f8d75345bbf13fc8f53c269a5ec4ef9e2e0488103e3239b2df13184cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f56940f8d75345bbf13fc8f53c269a5ec4ef9e2e0488103e3239b2df13184cc", kill_on_drop: false }`
[INFO] [stdout] 5f56940f8d75345bbf13fc8f53c269a5ec4ef9e2e0488103e3239b2df13184cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70b94863164f87bd1624bb80f484f2b3752405cc0bb0e63afb56fdbaa540b50d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "70b94863164f87bd1624bb80f484f2b3752405cc0bb0e63afb56fdbaa540b50d", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:100:18
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn fill_matching(mut program: &mut Vec<Instruction>, start: usize) -> usize {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling brain-brainfuck v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:100:18
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn fill_matching(mut program: &mut Vec<Instruction>, start: usize) -> usize {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.88s
[INFO] running `Command { std: "docker" "inspect" "70b94863164f87bd1624bb80f484f2b3752405cc0bb0e63afb56fdbaa540b50d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b94863164f87bd1624bb80f484f2b3752405cc0bb0e63afb56fdbaa540b50d", kill_on_drop: false }`
[INFO] [stdout] 70b94863164f87bd1624bb80f484f2b3752405cc0bb0e63afb56fdbaa540b50d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2af082788abc703e61527a7a11dd1543b6bae86842585ea7e11c60c4cbe1ad6e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2af082788abc703e61527a7a11dd1543b6bae86842585ea7e11c60c4cbe1ad6e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 28 tests
[INFO] [stderr]    --> src/interpreter.rs:100:18
[INFO] [stdout] test debug_format::tests::from_str ... ok
[INFO] [stderr]     |
[INFO] [stdout] test interpreter::tests::basic_movements ... ok
[INFO] [stderr] 100 | fn fill_matching(mut program: &mut Vec<Instruction>, start: usize) -> usize {
[INFO] [stdout] test interpreter::tests::callback_behaviour ... ok
[INFO] [stderr]     |                  ----^^^^^^^
[INFO] [stdout] test interpreter::tests::move_left_past_zero ... ok
[INFO] [stderr]     |                  |
[INFO] [stdout] test interpreter::tests::move_right_past_capacity ... ok
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stdout] test interpreter::tests::nested_loops ... ok
[INFO] [stderr]     |
[INFO] [stdout] test interpreter::tests::reading_input ... ok
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] test interpreter::tests::skip_first_loop ... ok
[INFO] [stderr] 
[INFO] [stdout] test interpreter::tests::wrapping ... ok
[INFO] [stderr] warning: `brain-brainfuck` (lib) generated 1 warning
[INFO] [stdout] test instruction::tests::display ... ok
[INFO] [stderr] warning: `brain-brainfuck` (lib test) generated 1 warning (1 duplicate)
[INFO] [stdout] test precompiler::tests::optimization_levels ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] test precompiler::tests::over_max_expected_jumps ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/brainfuck-1a1aaccb67ba8dfd)
[INFO] [stdout] test precompiler::tests::skip_unrecognized ... ok
[INFO] [stdout] test interpreter::tests::basic_looping ... ok
[INFO] [stdout] test interpreter::tests::hello_world ... ok
[INFO] [stdout] test optlevel::tests::from_str ... ok
[INFO] [stdout] test interpreter::tests::mismatched_jumps - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps10 - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps1 - should panic ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/brainfuck-faf258f842ea6ceb)
[INFO] [stdout] test precompiler::tests::mismatched_jumps11 - should panic ... ok
[INFO] [stderr]    Doc-tests brainfuck
[INFO] [stdout] test precompiler::tests::mismatched_jumps2 - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps4 - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps5 - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps6 - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps8 - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps9 - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps7 - should panic ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps3 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[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] [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" "2af082788abc703e61527a7a11dd1543b6bae86842585ea7e11c60c4cbe1ad6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2af082788abc703e61527a7a11dd1543b6bae86842585ea7e11c60c4cbe1ad6e", kill_on_drop: false }`
[INFO] [stdout] 2af082788abc703e61527a7a11dd1543b6bae86842585ea7e11c60c4cbe1ad6e