[INFO] cloning repository https://github.com/olgert/mr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/olgert/mr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Folgert%2Fmr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Folgert%2Fmr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 750296e9e945b8e2e9f33816a0bcab03da59c021
[INFO] testing olgert/mr against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Folgert%2Fmr" "/workspace/builds/worker-65/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-65/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/olgert/mr on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/olgert/mr
[INFO] finished tweaking git repo https://github.com/olgert/mr
[INFO] tweaked toml for git repo https://github.com/olgert/mr written to /workspace/builds/worker-65/source/Cargo.toml
[INFO] crate git repo https://github.com/olgert/mr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb92213862c3f1e0fdfb4a6b880077e71844db2917b275af09756052c67f3150
[INFO] running `Command { std: "docker" "start" "-a" "eb92213862c3f1e0fdfb4a6b880077e71844db2917b275af09756052c67f3150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb92213862c3f1e0fdfb4a6b880077e71844db2917b275af09756052c67f3150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb92213862c3f1e0fdfb4a6b880077e71844db2917b275af09756052c67f3150", kill_on_drop: false }`
[INFO] [stdout] eb92213862c3f1e0fdfb4a6b880077e71844db2917b275af09756052c67f3150
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d820346439a50f0049de93bfd098e02d58b5f4b37e7f4c203ad2f64373d773b
[INFO] running `Command { std: "docker" "start" "-a" "2d820346439a50f0049de93bfd098e02d58b5f4b37e7f4c203ad2f64373d773b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling mr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `spwn`
[INFO] [stdout]    --> src/main.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let spwn = thread::Builder::new()
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_spwn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RunResult`
[INFO] [stdout]    --> src/main.rs:162:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | struct RunResult {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.67s
[INFO] running `Command { std: "docker" "inspect" "2d820346439a50f0049de93bfd098e02d58b5f4b37e7f4c203ad2f64373d773b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d820346439a50f0049de93bfd098e02d58b5f4b37e7f4c203ad2f64373d773b", kill_on_drop: false }`
[INFO] [stdout] 2d820346439a50f0049de93bfd098e02d58b5f4b37e7f4c203ad2f64373d773b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 902b11f779b723bc37337d2f805b41f4800f7cf1d115880b997ee7778c42ea9c
[INFO] running `Command { std: "docker" "start" "-a" "902b11f779b723bc37337d2f805b41f4800f7cf1d115880b997ee7778c42ea9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling mr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `spwn`
[INFO] [stdout]    --> src/main.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |         let spwn = thread::Builder::new()
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_spwn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RunResult`
[INFO] [stdout]    --> src/main.rs:162:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | struct RunResult {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "902b11f779b723bc37337d2f805b41f4800f7cf1d115880b997ee7778c42ea9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "902b11f779b723bc37337d2f805b41f4800f7cf1d115880b997ee7778c42ea9c", kill_on_drop: false }`
[INFO] [stdout] 902b11f779b723bc37337d2f805b41f4800f7cf1d115880b997ee7778c42ea9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9d0ef94715afc733e823edc80dde7db377458742360e8957cc3aa49801e45883
[INFO] running `Command { std: "docker" "start" "-a" "9d0ef94715afc733e823edc80dde7db377458742360e8957cc3aa49801e45883", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `spwn`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/main.rs:121:13
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 121 |         let spwn = thread::Builder::new()
[INFO] [stdout] 
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_spwn`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RunResult`
[INFO] [stderr]    --> src/main.rs:162:8
[INFO] [stderr]     |
[INFO] [stderr] 162 | struct RunResult {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mr` (bin "mr" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mr-a9d728bf2aa13f7e)
[INFO] running `Command { std: "docker" "inspect" "9d0ef94715afc733e823edc80dde7db377458742360e8957cc3aa49801e45883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d0ef94715afc733e823edc80dde7db377458742360e8957cc3aa49801e45883", kill_on_drop: false }`
[INFO] [stdout] 9d0ef94715afc733e823edc80dde7db377458742360e8957cc3aa49801e45883