[INFO] fetching crate kgb 0.0.10...
[INFO] checking kgb-0.0.10 against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] extracting crate kgb 0.0.10 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate kgb 0.0.10 on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kgb 0.0.10
[INFO] finished tweaking crates.io crate kgb 0.0.10
[INFO] tweaked toml for crates.io crate kgb 0.0.10 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "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] 59c0d986fecc59704f7f4c7e3cda387f0f63ef827e8dc818f776a4491c7696ca
[INFO] running `Command { std: "docker" "start" "-a" "59c0d986fecc59704f7f4c7e3cda387f0f63ef827e8dc818f776a4491c7696ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59c0d986fecc59704f7f4c7e3cda387f0f63ef827e8dc818f776a4491c7696ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59c0d986fecc59704f7f4c7e3cda387f0f63ef827e8dc818f776a4491c7696ca", kill_on_drop: false }`
[INFO] [stdout] 59c0d986fecc59704f7f4c7e3cda387f0f63ef827e8dc818f776a4491c7696ca
[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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23fd7833bee392a45c3b41cb20a726626b28bd363e41731a74eca9c12615a691
[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" "23fd7833bee392a45c3b41cb20a726626b28bd363e41731a74eca9c12615a691", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking entities v1.0.1
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking environment v0.1.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking nom v4.2.3
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking nya v0.7.1
[INFO] [stderr]     Checking config v0.9.3
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking comrak v0.2.14
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking handlebars v1.1.0
[INFO] [stderr]     Checking assert_cli v0.6.3
[INFO] [stderr]     Checking kgb v0.0.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hbars.rs:41:88
[INFO] [stdout]    |
[INFO] [stdout] 41 |             |h: &Helper, _: &Handlebars, _: &Context, _: &mut RenderContext, out: &mut Output| {
[INFO] [stdout]    |                                                                                        ^^^^^^ help: use `dyn`: `dyn Output`
[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/hbars.rs:41:88
[INFO] [stdout]    |
[INFO] [stdout] 41 |             |h: &Helper, _: &Handlebars, _: &Context, _: &mut RenderContext, out: &mut Output| {
[INFO] [stdout]    |                                                                                        ^^^^^^ help: use `dyn`: `dyn Output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut source;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut source;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hbars.rs:96:29
[INFO] [stdout]    |
[INFO] [stdout] 96 |                         let mut file_struct = SimpleFile {
[INFO] [stdout]    |                             ----^^^^^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hbars.rs:96:29
[INFO] [stdout]    |
[INFO] [stdout] 96 |                         let mut file_struct = SimpleFile {
[INFO] [stdout]    |                             ----^^^^^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.06s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "23fd7833bee392a45c3b41cb20a726626b28bd363e41731a74eca9c12615a691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23fd7833bee392a45c3b41cb20a726626b28bd363e41731a74eca9c12615a691", kill_on_drop: false }`
[INFO] [stdout] 23fd7833bee392a45c3b41cb20a726626b28bd363e41731a74eca9c12615a691