[INFO] cloning repository https://github.com/mschorsch/isolate-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mschorsch/isolate-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmschorsch%2Fisolate-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmschorsch%2Fisolate-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aedc3a6fa6db94290fd6ffaa1a41dc4017ca5af6
[INFO] testing mschorsch/isolate-rs against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmschorsch%2Fisolate-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mschorsch/isolate-rs on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mschorsch/isolate-rs
[INFO] finished tweaking git repo https://github.com/mschorsch/isolate-rs
[INFO] tweaked toml for git repo https://github.com/mschorsch/isolate-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mschorsch/isolate-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8c3939073b39887622744f7dba8804abd9f9ceca7fc90dbfe5b10cfe7c14397
[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" "a8c3939073b39887622744f7dba8804abd9f9ceca7fc90dbfe5b10cfe7c14397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8c3939073b39887622744f7dba8804abd9f9ceca7fc90dbfe5b10cfe7c14397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8c3939073b39887622744f7dba8804abd9f9ceca7fc90dbfe5b10cfe7c14397", kill_on_drop: false }`
[INFO] [stdout] a8c3939073b39887622744f7dba8804abd9f9ceca7fc90dbfe5b10cfe7c14397
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ab8ac8ab7bfaa4026fad60d7f3dc0e079b431a2edc3a676ad57a4fc3360ab47
[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" "0ab8ac8ab7bfaa4026fad60d7f3dc0e079b431a2edc3a676ad57a4fc3360ab47", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling toml v0.4.5
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.14
[INFO] [stderr]    Compiling textwrap v0.8.0
[INFO] [stderr]    Compiling clap v2.26.2
[INFO] [stderr]    Compiling backtrace v0.3.3
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling isolate-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | / error_chain! {
[INFO] [stdout] 24 | |
[INFO] [stdout] 25 | |     types {
[INFO] [stdout] 26 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |     errors {}
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/errors.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | / error_chain! {
[INFO] [stdout] 24 | |
[INFO] [stdout] 25 | |     types {
[INFO] [stdout] 26 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |     errors {}
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.35s
[INFO] running `Command { std: "docker" "inspect" "0ab8ac8ab7bfaa4026fad60d7f3dc0e079b431a2edc3a676ad57a4fc3360ab47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ab8ac8ab7bfaa4026fad60d7f3dc0e079b431a2edc3a676ad57a4fc3360ab47", kill_on_drop: false }`
[INFO] [stdout] 0ab8ac8ab7bfaa4026fad60d7f3dc0e079b431a2edc3a676ad57a4fc3360ab47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 792eb2c47f8c0daf5191ca402e0f1282dbb7a9816d202b97ef2c1624ac8d3c7a
[INFO] running `Command { std: "docker" "start" "-a" "792eb2c47f8c0daf5191ca402e0f1282dbb7a9816d202b97ef2c1624ac8d3c7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling isolate-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | / error_chain! {
[INFO] [stdout] 24 | |
[INFO] [stdout] 25 | |     types {
[INFO] [stdout] 26 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |     errors {}
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/errors.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | / error_chain! {
[INFO] [stdout] 24 | |
[INFO] [stdout] 25 | |     types {
[INFO] [stdout] 26 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |     errors {}
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "792eb2c47f8c0daf5191ca402e0f1282dbb7a9816d202b97ef2c1624ac8d3c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792eb2c47f8c0daf5191ca402e0f1282dbb7a9816d202b97ef2c1624ac8d3c7a", kill_on_drop: false }`
[INFO] [stdout] 792eb2c47f8c0daf5191ca402e0f1282dbb7a9816d202b97ef2c1624ac8d3c7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e41115552e95d14c5b4530930ba7b4b80328899f5237917bad31fee6e3ad6a4a
[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" "e41115552e95d14c5b4530930ba7b4b80328899f5237917bad31fee6e3ad6a4a", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/errors.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / error_chain! {
[INFO] [stderr] 24 | |
[INFO] [stderr] 25 | |     types {
[INFO] [stderr] 26 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |     errors {}
[INFO] [stderr] 34 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / error_chain! {
[INFO] [stderr] 24 | |
[INFO] [stderr] 25 | |     types {
[INFO] [stderr] 26 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |     errors {}
[INFO] [stderr] 34 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/isolate_rs-2d24ae2de216a46d
[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" "e41115552e95d14c5b4530930ba7b4b80328899f5237917bad31fee6e3ad6a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e41115552e95d14c5b4530930ba7b4b80328899f5237917bad31fee6e3ad6a4a", kill_on_drop: false }`
[INFO] [stdout] e41115552e95d14c5b4530930ba7b4b80328899f5237917bad31fee6e3ad6a4a