[INFO] updating cached repository https://github.com/TrueWarg/f-vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5240308c3b12c8f0e1542f14e67c1133fc41d5dc
[INFO] testing TrueWarg/f-vm against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrueWarg%2Ff-vm" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TrueWarg/f-vm on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TrueWarg/f-vm
[INFO] finished tweaking git repo https://github.com/TrueWarg/f-vm
[INFO] tweaked toml for git repo https://github.com/TrueWarg/f-vm written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/TrueWarg/f-vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c591f3bbfeacbb26eccddf6b30780f6540dd7af75d4dd22ce540d70cc19facf6
[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" "c591f3bbfeacbb26eccddf6b30780f6540dd7af75d4dd22ce540d70cc19facf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c591f3bbfeacbb26eccddf6b30780f6540dd7af75d4dd22ce540d70cc19facf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c591f3bbfeacbb26eccddf6b30780f6540dd7af75d4dd22ce540d70cc19facf6", kill_on_drop: false }`
[INFO] [stdout] c591f3bbfeacbb26eccddf6b30780f6540dd7af75d4dd22ce540d70cc19facf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4819deb2c014f9825dd5974468d7148852a37c89aefcffdc95529daf9dd5f71
[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" "d4819deb2c014f9825dd5974468d7148852a37c89aefcffdc95529daf9dd5f71", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling backtrace v0.3.37
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling f-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `failure::Fail`
[INFO] [stdout]  --> src/virtual_stack_machine.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use failure::Fail;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Push`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Push(i32),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Add`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Add, 
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AddAssign`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     AddAssign(i32), 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Subtract`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Subtract,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SubtractAssign`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     SubtractAssign(i32)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn new(stack: Vec<i32>) -> Vm {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_for_last_and_push`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn apply_for_last_and_push<F>(mut stack: Vec<i32>, apply: F) -> Result<Vec<i32>, StackError>
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_for_two_last_and_push`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn apply_for_two_last_and_push<F>(mut stack: Vec<i32>, apply: F) -> Result<Vec<i32>, StackError>
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `StackError`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 | enum StackError {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.01s
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d4819deb2c014f9825dd5974468d7148852a37c89aefcffdc95529daf9dd5f71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4819deb2c014f9825dd5974468d7148852a37c89aefcffdc95529daf9dd5f71", kill_on_drop: false }`
[INFO] [stdout] d4819deb2c014f9825dd5974468d7148852a37c89aefcffdc95529daf9dd5f71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31c994425d6e4ca83909d91c04613f10a2df6a395751f8131a7f7e2e659c7e10
[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" "31c994425d6e4ca83909d91c04613f10a2df6a395751f8131a7f7e2e659c7e10", kill_on_drop: false }`
[INFO] [stderr]    Compiling f-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `failure::Fail`
[INFO] [stdout]  --> src/virtual_stack_machine.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use failure::Fail;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Push`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Push(i32),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Add`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Add, 
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AddAssign`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     AddAssign(i32), 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Subtract`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Subtract,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SubtractAssign`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     SubtractAssign(i32)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn new(stack: Vec<i32>) -> Vm {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_for_last_and_push`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn apply_for_last_and_push<F>(mut stack: Vec<i32>, apply: F) -> Result<Vec<i32>, StackError>
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_for_two_last_and_push`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn apply_for_two_last_and_push<F>(mut stack: Vec<i32>, apply: F) -> Result<Vec<i32>, StackError>
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `StackError`
[INFO] [stdout]   --> src/virtual_stack_machine.rs:90:6
[INFO] [stdout]    |
[INFO] [stdout] 90 | enum StackError {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "31c994425d6e4ca83909d91c04613f10a2df6a395751f8131a7f7e2e659c7e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31c994425d6e4ca83909d91c04613f10a2df6a395751f8131a7f7e2e659c7e10", kill_on_drop: false }`
[INFO] [stdout] 31c994425d6e4ca83909d91c04613f10a2df6a395751f8131a7f7e2e659c7e10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0bef81f17a18fffddb483e40ea549b611b47962de3bb02584bac22eba38ac235
[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" "0bef81f17a18fffddb483e40ea549b611b47962de3bb02584bac22eba38ac235", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `failure::Fail`
[INFO] [stderr]  --> src/virtual_stack_machine.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use failure::Fail;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Push`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     Push(i32),
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Add`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Add, 
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AddAssign`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     AddAssign(i32), 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Subtract`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Subtract,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SubtractAssign`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     SubtractAssign(i32)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn new(stack: Vec<i32>) -> Vm {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `apply_for_last_and_push`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:69:4
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn apply_for_last_and_push<F>(mut stack: Vec<i32>, apply: F) -> Result<Vec<i32>, StackError>
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `apply_for_two_last_and_push`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:78:4
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn apply_for_two_last_and_push<F>(mut stack: Vec<i32>, apply: F) -> Result<Vec<i32>, StackError>
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `StackError`
[INFO] [stderr]   --> src/virtual_stack_machine.rs:90:6
[INFO] [stderr]    |
[INFO] [stderr] 90 | enum StackError {
[INFO] [stderr]    |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/f_vm-abfa7d83019de3a0
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0bef81f17a18fffddb483e40ea549b611b47962de3bb02584bac22eba38ac235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bef81f17a18fffddb483e40ea549b611b47962de3bb02584bac22eba38ac235", kill_on_drop: false }`
[INFO] [stdout] 0bef81f17a18fffddb483e40ea549b611b47962de3bb02584bac22eba38ac235