[INFO] cloning repository https://github.com/Epigenetic/mpp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Epigenetic/mpp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEpigenetic%2Fmpp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEpigenetic%2Fmpp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4a71202f1889ecfcadac5e131b5e16ef1f2d144
[INFO] building Epigenetic/mpp against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEpigenetic%2Fmpp" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Epigenetic/mpp on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Epigenetic/mpp
[INFO] finished tweaking git repo https://github.com/Epigenetic/mpp
[INFO] tweaked toml for git repo https://github.com/Epigenetic/mpp written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Epigenetic/mpp 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm_winapi v0.8.0
[INFO] [stderr]   Downloaded crossterm v0.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9feefc19fa192ec71a85beba6e24b87528f017e04917093738b5eb32acf66501
[INFO] running `Command { std: "docker" "start" "-a" "9feefc19fa192ec71a85beba6e24b87528f017e04917093738b5eb32acf66501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9feefc19fa192ec71a85beba6e24b87528f017e04917093738b5eb32acf66501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9feefc19fa192ec71a85beba6e24b87528f017e04917093738b5eb32acf66501", kill_on_drop: false }`
[INFO] [stdout] 9feefc19fa192ec71a85beba6e24b87528f017e04917093738b5eb32acf66501
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8bb52a87c52d5d581ed1e31ca5446639fbc2097e39c592b001aa6df75ea2ab1
[INFO] running `Command { std: "docker" "start" "-a" "a8bb52a87c52d5d581ed1e31ca5446639fbc2097e39c592b001aa6df75ea2ab1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling signal-hook-mio v0.2.1
[INFO] [stderr]    Compiling crossterm v0.20.0
[INFO] [stderr]    Compiling mpp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::runtime::BTree`
[INFO] [stdout]  --> src/runtime/mval.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::runtime::BTree;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vm::VM`
[INFO] [stdout]   --> src/runtime/mod.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub use vm::VM;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Pop` is never constructed
[INFO] [stdout]   --> src/runtime/op.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Ops {
[INFO] [stdout]    |          --- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 41 |     Pop = 28,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Ops` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: calls to `std::mem::drop` with `std::mem::ManuallyDrop` instead of the inner value does nothing
[INFO] [stdout]    --> src/runtime/mval.rs:295:9
[INFO] [stdout]     |
[INFO] [stdout] 295 |         drop(old_string)
[INFO] [stdout]     |         ^^^^^----------^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `ManuallyDrop<String>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(undropped_manually_drops)]` on by default
[INFO] [stdout] help: use `std::mem::ManuallyDrop::into_inner` to get the inner value
[INFO] [stdout]     |
[INFO] [stdout] 295 |         drop(std::mem::ManuallyDrop::into_inner(old_string))
[INFO] [stdout]     |              +++++++++++++++++++++++++++++++++++          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: calls to `std::mem::drop` with `std::mem::ManuallyDrop` instead of the inner value does nothing
[INFO] [stdout]    --> src/runtime/mval.rs:861:13
[INFO] [stdout]     |
[INFO] [stdout] 861 |             drop(self.get_string_val())
[INFO] [stdout]     |             ^^^^^---------------------^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  argument has type `ManuallyDrop<String>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `std::mem::ManuallyDrop::into_inner` to get the inner value
[INFO] [stdout]     |
[INFO] [stdout] 861 |             drop(std::mem::ManuallyDrop::into_inner(self.get_string_val()))
[INFO] [stdout]     |                  +++++++++++++++++++++++++++++++++++                     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mpp` (bin "mpp") due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a8bb52a87c52d5d581ed1e31ca5446639fbc2097e39c592b001aa6df75ea2ab1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8bb52a87c52d5d581ed1e31ca5446639fbc2097e39c592b001aa6df75ea2ab1", kill_on_drop: false }`
[INFO] [stdout] a8bb52a87c52d5d581ed1e31ca5446639fbc2097e39c592b001aa6df75ea2ab1
