[INFO] fetching crate merino 0.1.3...
[INFO] checking merino-0.1.3 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate merino 0.1.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate merino 0.1.3 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merino 0.1.3
[INFO] finished tweaking crates.io crate merino 0.1.3
[INFO] tweaked toml for crates.io crate merino 0.1.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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] d50023c430477fd4a713a6373e5aad562f0a270d26efabaabcfd82b1399ced7a
[INFO] running `Command { std: "docker" "start" "-a" "d50023c430477fd4a713a6373e5aad562f0a270d26efabaabcfd82b1399ced7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d50023c430477fd4a713a6373e5aad562f0a270d26efabaabcfd82b1399ced7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d50023c430477fd4a713a6373e5aad562f0a270d26efabaabcfd82b1399ced7a", kill_on_drop: false }`
[INFO] [stdout] d50023c430477fd4a713a6373e5aad562f0a270d26efabaabcfd82b1399ced7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f23ff0f8ffe800280149b2c3508be519ab7b6427d9b6c721dcba80c750041c01
[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" "f23ff0f8ffe800280149b2c3508be519ab7b6427d9b6c721dcba80c750041c01", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]    Compiling snafu-derive v0.4.4
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking snafu v0.4.4
[INFO] [stderr]     Checking merino v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `version`
[INFO] [stdout]    --> src/lib.rs:490:5
[INFO] [stdout]     |
[INFO] [stdout] 490 |     pub version: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]    --> src/lib.rs:396:25
[INFO] [stdout]     |
[INFO] [stdout] 396 |                         copy(&mut outbound_in, &mut inbound_out).is_ok();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]    --> src/lib.rs:403:25
[INFO] [stdout]     |
[INFO] [stdout] 403 |                         copy(&mut inbound_in, &mut outbound_out).is_ok();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `version`
[INFO] [stdout]    --> src/lib.rs:490:5
[INFO] [stdout]     |
[INFO] [stdout] 490 |     pub version: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]    --> src/lib.rs:396:25
[INFO] [stdout]     |
[INFO] [stdout] 396 |                         copy(&mut outbound_in, &mut inbound_out).is_ok();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Result::<T, E>::is_ok` that must be used
[INFO] [stdout]    --> src/lib.rs:403:25
[INFO] [stdout]     |
[INFO] [stdout] 403 |                         copy(&mut inbound_in, &mut outbound_out).is_ok();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.12s
[INFO] running `Command { std: "docker" "inspect" "f23ff0f8ffe800280149b2c3508be519ab7b6427d9b6c721dcba80c750041c01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f23ff0f8ffe800280149b2c3508be519ab7b6427d9b6c721dcba80c750041c01", kill_on_drop: false }`
[INFO] [stdout] f23ff0f8ffe800280149b2c3508be519ab7b6427d9b6c721dcba80c750041c01