[INFO] fetching crate itm 0.3.1...
[INFO] documenting itm-0.3.1 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate itm 0.3.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate itm 0.3.1 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate itm 0.3.1
[INFO] finished tweaking crates.io crate itm 0.3.1
[INFO] tweaked toml for crates.io crate itm 0.3.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", 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] 5ca0e698f957ae30aab814cf46d111bbdbba4d5023a928e5b99e6bc3c3e5519d
[INFO] running `Command { std: "docker" "start" "-a" "5ca0e698f957ae30aab814cf46d111bbdbba4d5023a928e5b99e6bc3c3e5519d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ca0e698f957ae30aab814cf46d111bbdbba4d5023a928e5b99e6bc3c3e5519d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ca0e698f957ae30aab814cf46d111bbdbba4d5023a928e5b99e6bc3c3e5519d", kill_on_drop: false }`
[INFO] [stdout] 5ca0e698f957ae30aab814cf46d111bbdbba4d5023a928e5b99e6bc3c3e5519d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] 317a5c5e6d4b12c7ed76f1a60dab0bc80d813eb7717bb7074f38ab6c689dea09
[INFO] running `Command { std: "docker" "start" "-a" "317a5c5e6d4b12c7ed76f1a60dab0bc80d813eb7717bb7074f38ab6c689dea09", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling itm v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> build.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Ok(try!(String::from_utf8(
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> build.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         try!(
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> build.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     Ok(try!(String::from_utf8(
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> build.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         try!(
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]  Documenting itm v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.71s
[INFO] running `Command { std: "docker" "inspect" "317a5c5e6d4b12c7ed76f1a60dab0bc80d813eb7717bb7074f38ab6c689dea09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "317a5c5e6d4b12c7ed76f1a60dab0bc80d813eb7717bb7074f38ab6c689dea09", kill_on_drop: false }`
[INFO] [stdout] 317a5c5e6d4b12c7ed76f1a60dab0bc80d813eb7717bb7074f38ab6c689dea09