[INFO] crate cargo-mutagen 0.1.2 is already in cache
[INFO] testing cargo-mutagen-0.1.2 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate cargo-mutagen 0.1.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate cargo-mutagen 0.1.2 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-mutagen 0.1.2
[INFO] finished tweaking crates.io crate cargo-mutagen 0.1.2
[INFO] tweaked toml for crates.io crate cargo-mutagen 0.1.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50d64c81f3b5c70a497785496cee406c9d529a7d157ed597e5c9f83117d5c307
[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" "50d64c81f3b5c70a497785496cee406c9d529a7d157ed597e5c9f83117d5c307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50d64c81f3b5c70a497785496cee406c9d529a7d157ed597e5c9f83117d5c307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50d64c81f3b5c70a497785496cee406c9d529a7d157ed597e5c9f83117d5c307", kill_on_drop: false }`
[INFO] [stdout] 50d64c81f3b5c70a497785496cee406c9d529a7d157ed597e5c9f83117d5c307
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33566784e5ca95ac2e6db2b6cda3585aec0023bd52555ef1f070239d7b523319
[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" "33566784e5ca95ac2e6db2b6cda3585aec0023bd52555ef1f070239d7b523319", kill_on_drop: false }`
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling json v0.11.15
[INFO] [stderr]    Compiling wait-timeout v0.1.5
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling cargo-mutagen v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:48:31
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn run_mutations(runner: &mut Runner, list: &[String]) -> Result<()> {
[INFO] [stdout]    |                               ^^^^^^ help: use `dyn`: `dyn Runner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:161:26
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let runner: &mut Runner = if with_coverage {
[INFO] [stdout]     |                          ^^^^^^ help: use `dyn`: `dyn Runner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.97s
[INFO] running `Command { std: "docker" "inspect" "33566784e5ca95ac2e6db2b6cda3585aec0023bd52555ef1f070239d7b523319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33566784e5ca95ac2e6db2b6cda3585aec0023bd52555ef1f070239d7b523319", kill_on_drop: false }`
[INFO] [stdout] 33566784e5ca95ac2e6db2b6cda3585aec0023bd52555ef1f070239d7b523319
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50e520399f14cb5faff9fe367b27a5fcbfa5cec4c5e4b7a39c83d1e76c581f26
[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" "50e520399f14cb5faff9fe367b27a5fcbfa5cec4c5e4b7a39c83d1e76c581f26", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo-mutagen v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:48:31
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn run_mutations(runner: &mut Runner, list: &[String]) -> Result<()> {
[INFO] [stdout]    |                               ^^^^^^ help: use `dyn`: `dyn Runner`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:161:26
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let runner: &mut Runner = if with_coverage {
[INFO] [stdout]     |                          ^^^^^^ help: use `dyn`: `dyn Runner`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "50e520399f14cb5faff9fe367b27a5fcbfa5cec4c5e4b7a39c83d1e76c581f26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50e520399f14cb5faff9fe367b27a5fcbfa5cec4c5e4b7a39c83d1e76c581f26", kill_on_drop: false }`
[INFO] [stdout] 50e520399f14cb5faff9fe367b27a5fcbfa5cec4c5e4b7a39c83d1e76c581f26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1f26063974b9c9be579bc2a36446d513ac2c1cbb7320c6fbf79b02bc22857f86
[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" "1f26063974b9c9be579bc2a36446d513ac2c1cbb7320c6fbf79b02bc22857f86", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 4 tests
[INFO] [stderr]   --> src/main.rs:48:31
[INFO] [stdout] test tests::it_fails_to_decode_malformed_mutations ... ok
[INFO] [stderr]    |
[INFO] [stdout] test runner::tests::it_returns_test_if_they_were_added ... ok
[INFO] [stderr] 48 | fn run_mutations(runner: &mut Runner, list: &[String]) -> Result<()> {
[INFO] [stdout] test runner::tests::it_returns_no_tests_on_empty ... ok
[INFO] [stderr]    |                               ^^^^^^ help: use `dyn`: `dyn Runner`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:161:26
[INFO] [stderr]     |
[INFO] [stderr] 161 |         let runner: &mut Runner = if with_coverage {
[INFO] [stderr]     |                          ^^^^^^ help: use `dyn`: `dyn Runner`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cargo_mutagen-d3759f905c2925bb
[INFO] [stdout] test tests::it_decodes_well_formed_mutations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1f26063974b9c9be579bc2a36446d513ac2c1cbb7320c6fbf79b02bc22857f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f26063974b9c9be579bc2a36446d513ac2c1cbb7320c6fbf79b02bc22857f86", kill_on_drop: false }`
[INFO] [stdout] 1f26063974b9c9be579bc2a36446d513ac2c1cbb7320c6fbf79b02bc22857f86