[INFO] crate canonical_json 0.8.4 is already in cache
[INFO] documenting canonical_json-0.8.4 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate canonical_json 0.8.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate canonical_json 0.8.4 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate canonical_json 0.8.4
[INFO] finished tweaking crates.io crate canonical_json 0.8.4
[INFO] tweaked toml for crates.io crate canonical_json 0.8.4 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6304ceabcb2d6f6e30e12ab265381a6470824bfbe2508e6dc4c0b5ea8cd2ae3b
[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" "6304ceabcb2d6f6e30e12ab265381a6470824bfbe2508e6dc4c0b5ea8cd2ae3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6304ceabcb2d6f6e30e12ab265381a6470824bfbe2508e6dc4c0b5ea8cd2ae3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6304ceabcb2d6f6e30e12ab265381a6470824bfbe2508e6dc4c0b5ea8cd2ae3b", kill_on_drop: false }`
[INFO] [stdout] 6304ceabcb2d6f6e30e12ab265381a6470824bfbe2508e6dc4c0b5ea8cd2ae3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "RUSTDOCFLAGS=--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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] c5e54a4441e25a8b8593d603fe29493f06d1d40740d7a416b39064ea661abadd
[INFO] running `Command { std: "docker" "start" "-a" "c5e54a4441e25a8b8593d603fe29493f06d1d40740d7a416b39064ea661abadd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]  Documenting canonical_json v0.8.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0437]: type `Err` is not a member of trait `TryFrom`
[INFO] [stdout]     --> src/value.rs:1146:5
[INFO] [stdout]      |
[INFO] [stdout] 1146 |     type Err = SyntaxError;
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^ not a member of trait `TryFrom`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0437`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `canonical_json`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name canonical_json src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern dtoa=/opt/rustwide/target/debug/deps/libdtoa-2e94e86e00ad6412.rmeta --extern itoa=/opt/rustwide/target/debug/deps/libitoa-0de751ee3a6bcda7.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-6d90f4e48187dc29.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-799dcff0441404f9.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-bf3d1f120e618b78.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c5e54a4441e25a8b8593d603fe29493f06d1d40740d7a416b39064ea661abadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5e54a4441e25a8b8593d603fe29493f06d1d40740d7a416b39064ea661abadd", kill_on_drop: false }`
[INFO] [stdout] c5e54a4441e25a8b8593d603fe29493f06d1d40740d7a416b39064ea661abadd