[INFO] fetching crate itm 0.3.1...
[INFO] documenting itm-0.3.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate itm 0.3.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate itm 0.3.1 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cf1abe83c6d21ef6275c7ded077c1870e6219386fbf51b4b7896c726cf1b55e
[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" "6cf1abe83c6d21ef6275c7ded077c1870e6219386fbf51b4b7896c726cf1b55e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cf1abe83c6d21ef6275c7ded077c1870e6219386fbf51b4b7896c726cf1b55e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cf1abe83c6d21ef6275c7ded077c1870e6219386fbf51b4b7896c726cf1b55e", kill_on_drop: false }`
[INFO] [stdout] 6cf1abe83c6d21ef6275c7ded077c1870e6219386fbf51b4b7896c726cf1b55e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 135da79cf3e57402545c80e9c52fc6ef9de6ab38110dc61cc41d2afc38a3e43e
[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" "135da79cf3e57402545c80e9c52fc6ef9de6ab38110dc61cc41d2afc38a3e43e", kill_on_drop: false }`
[INFO] [stderr]    Compiling itm v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]   --> build.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         try!(
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting itm v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `Command { std: "docker" "inspect" "135da79cf3e57402545c80e9c52fc6ef9de6ab38110dc61cc41d2afc38a3e43e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "135da79cf3e57402545c80e9c52fc6ef9de6ab38110dc61cc41d2afc38a3e43e", kill_on_drop: false }`
[INFO] [stdout] 135da79cf3e57402545c80e9c52fc6ef9de6ab38110dc61cc41d2afc38a3e43e