[INFO] crate testfile 0.0.2 is already in cache
[INFO] testing testfile-0.0.2 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate testfile 0.0.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate testfile 0.0.2 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 crates.io crate testfile 0.0.2
[INFO] finished tweaking crates.io crate testfile 0.0.2
[INFO] tweaked toml for crates.io crate testfile 0.0.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c088b082b27bd5d200e89d601195049b4d7ce1c6fa81935b64e18a56fdef926
[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" "8c088b082b27bd5d200e89d601195049b4d7ce1c6fa81935b64e18a56fdef926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c088b082b27bd5d200e89d601195049b4d7ce1c6fa81935b64e18a56fdef926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c088b082b27bd5d200e89d601195049b4d7ce1c6fa81935b64e18a56fdef926", kill_on_drop: false }`
[INFO] [stdout] 8c088b082b27bd5d200e89d601195049b4d7ce1c6fa81935b64e18a56fdef926
[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=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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 84b72eaa4732b84bc1565d7a14e555d9fe6219f3336b3117bd25205a866f767a
[INFO] running `Command { std: "docker" "start" "-a" "84b72eaa4732b84bc1565d7a14e555d9fe6219f3336b3117bd25205a866f767a", kill_on_drop: false }`
[INFO] [stderr]    Compiling testfile v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "84b72eaa4732b84bc1565d7a14e555d9fe6219f3336b3117bd25205a866f767a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84b72eaa4732b84bc1565d7a14e555d9fe6219f3336b3117bd25205a866f767a", kill_on_drop: false }`
[INFO] [stdout] 84b72eaa4732b84bc1565d7a14e555d9fe6219f3336b3117bd25205a866f767a
[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=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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 89868d2959679ad5bbc5ab1fc3cdf9844b6f84ecdcabf7523335d09f4891966a
[INFO] running `Command { std: "docker" "start" "-a" "89868d2959679ad5bbc5ab1fc3cdf9844b6f84ecdcabf7523335d09f4891966a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]    Compiling testfile v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/./lib_tests.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let mut f = std::fs::File::open(&tf.path);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/./lib_tests.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let mut f = std::fs::File::open(&tf.path);
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 13.13s
[INFO] running `Command { std: "docker" "inspect" "89868d2959679ad5bbc5ab1fc3cdf9844b6f84ecdcabf7523335d09f4891966a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89868d2959679ad5bbc5ab1fc3cdf9844b6f84ecdcabf7523335d09f4891966a", kill_on_drop: false }`
[INFO] [stdout] 89868d2959679ad5bbc5ab1fc3cdf9844b6f84ecdcabf7523335d09f4891966a
[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=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] bd16a131a2c0b8c6e644c94101a8d6772bff0fda2377d0f495a199bd3f3c0e6f
[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" "bd16a131a2c0b8c6e644c94101a8d6772bff0fda2377d0f495a199bd3f3c0e6f", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/./lib_tests.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let mut f = std::fs::File::open(&tf.path);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/./lib_tests.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let mut f = std::fs::File::open(&tf.path);
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/testfile-34256041102e51c5
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test tests::deref::canBeDereferencedAsFile ... ok
[INFO] [stdout] test tests::deref::canBeReferencedAsMutableTestFile ... ok
[INFO] [stdout] test tests::deref::canBeReferencedAsRead ... ok
[INFO] [stdout] test tests::deref::canBeReferencedAsWritableFile ... ok
[INFO] [stdout] test tests::testFileCleanup ... ok
[INFO] [stdout] test tests::deref::canBeDereferencedAsWritableFile ... ok
[INFO] [stdout] test tests::deref::canBeReferencedAsPath ... ok
[INFO] [stdout] test tests::deref::canBeReferencedAsFile ... ok
[INFO] [stdout] test tests::deref::canBeReferencedAsWrite ... ok
[INFO] [stdout] test tests::flushTest ... ok
[INFO] [stdout] test tests::testEmptyFile ... ok
[INFO] [stdout] test tests::deref::canBeReferencedAsPathBuf ... ok
[INFO] [stderr]    Doc-tests testfile
[INFO] [stdout] test tests::testFromStr ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "bd16a131a2c0b8c6e644c94101a8d6772bff0fda2377d0f495a199bd3f3c0e6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd16a131a2c0b8c6e644c94101a8d6772bff0fda2377d0f495a199bd3f3c0e6f", kill_on_drop: false }`
[INFO] [stdout] bd16a131a2c0b8c6e644c94101a8d6772bff0fda2377d0f495a199bd3f3c0e6f