[INFO] fetching crate magnet_schema 0.8.0...
[INFO] checking magnet_schema-0.8.0 against try#82acd1d76add2232e19c1f0feb250d2a19ec6efe for pr-81213
[INFO] extracting crate magnet_schema 0.8.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate magnet_schema 0.8.0 on toolchain 82acd1d76add2232e19c1f0feb250d2a19ec6efe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate magnet_schema 0.8.0
[INFO] finished tweaking crates.io crate magnet_schema 0.8.0
[INFO] tweaked toml for crates.io crate magnet_schema 0.8.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hex v0.3.2
[INFO] [stderr]   Downloaded md5 v0.3.8
[INFO] [stderr]   Downloaded linked-hash-map v0.5.4
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded rand v0.5.6
[INFO] [stderr]   Downloaded bson v0.13.0
[INFO] [stderr]   Downloaded try_from v0.2.2
[INFO] [stderr]   Downloaded magnet_derive v0.8.0
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39faf3461d2891d6fdb0d5eed18f3c9d95daedef174a8940da1885f0756ccaf8
[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" "39faf3461d2891d6fdb0d5eed18f3c9d95daedef174a8940da1885f0756ccaf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39faf3461d2891d6fdb0d5eed18f3c9d95daedef174a8940da1885f0756ccaf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39faf3461d2891d6fdb0d5eed18f3c9d95daedef174a8940da1885f0756ccaf8", kill_on_drop: false }`
[INFO] [stdout] 39faf3461d2891d6fdb0d5eed18f3c9d95daedef174a8940da1885f0756ccaf8
[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=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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d757c7ad04693f4675e4cd46cc8109d5e6ee39b1d956204c8cdab0b41799837d
[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" "d757c7ad04693f4675e4cd46cc8109d5e6ee39b1d956204c8cdab0b41799837d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]     Checking md5 v0.3.8
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking try_from v0.2.2
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking bson v0.13.0
[INFO] [stderr]     Checking magnet_schema v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling magnet_derive v0.8.0
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/tests.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 |             where E: Into<Box<error::Error + Send + Sync>> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error + Send + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.23s
[INFO] running `Command { std: "docker" "inspect" "d757c7ad04693f4675e4cd46cc8109d5e6ee39b1d956204c8cdab0b41799837d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d757c7ad04693f4675e4cd46cc8109d5e6ee39b1d956204c8cdab0b41799837d", kill_on_drop: false }`
[INFO] [stdout] d757c7ad04693f4675e4cd46cc8109d5e6ee39b1d956204c8cdab0b41799837d