[INFO] fetching crate erased-serde 0.3.13...
[INFO] checking erased-serde-0.3.13 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate erased-serde 0.3.13 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate erased-serde 0.3.13 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate erased-serde 0.3.13
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate erased-serde 0.3.13
[INFO] tweaked toml for crates.io crate erased-serde 0.3.13 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4fe4255dd7a9befb8f11ca8c2908298c5c8c1b828c089045bce12c8efa0f322
[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" "d4fe4255dd7a9befb8f11ca8c2908298c5c8c1b828c089045bce12c8efa0f322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4fe4255dd7a9befb8f11ca8c2908298c5c8c1b828c089045bce12c8efa0f322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4fe4255dd7a9befb8f11ca8c2908298c5c8c1b828c089045bce12c8efa0f322", kill_on_drop: false }`
[INFO] [stdout] d4fe4255dd7a9befb8f11ca8c2908298c5c8c1b828c089045bce12c8efa0f322
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 387e760578651830945a37342a18395179bf1b6d49f2a096670eacce89b0d132
[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" "387e760578651830945a37342a18395179bf1b6d49f2a096670eacce89b0d132", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking erased-serde v0.3.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/de.rs:1252:50
[INFO] [stdout]      |
[INFO] [stdout] 1252 |             let de: &mut dyn Deserializer = &mut Deserializer::erase(&mut de);
[INFO] [stdout]      |                                                  ^^^^^^^^^^^^ help: use `dyn`: `<dyn Deserializer>`
[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/de.rs:1259:58
[INFO] [stdout]      |
[INFO] [stdout] 1259 |             let mut de: Box<dyn Deserializer> = Box::new(Deserializer::erase(&mut de));
[INFO] [stdout]      |                                                          ^^^^^^^^^^^^ help: use `dyn`: `<dyn Deserializer>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/ser.rs:1007:53
[INFO] [stdout]      |
[INFO] [stdout] 1007 |                 let ser: &mut dyn Serializer = &mut Serializer::erase(&mut ser);
[INFO] [stdout]      |                                                     ^^^^^^^^^^ help: use `dyn`: `<dyn Serializer>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/ser.rs:1023:61
[INFO] [stdout]      |
[INFO] [stdout] 1023 |                 let mut ser: Box<dyn Serializer> = Box::new(Serializer::erase(&mut ser));
[INFO] [stdout]      |                                                             ^^^^^^^^^^ help: use `dyn`: `<dyn Serializer>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.43s
[INFO] running `Command { std: "docker" "inspect" "387e760578651830945a37342a18395179bf1b6d49f2a096670eacce89b0d132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "387e760578651830945a37342a18395179bf1b6d49f2a096670eacce89b0d132", kill_on_drop: false }`
[INFO] [stdout] 387e760578651830945a37342a18395179bf1b6d49f2a096670eacce89b0d132