[INFO] fetching crate what-bump 1.2.0...
[INFO] checking what-bump-1.2.0 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate what-bump 1.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate what-bump 1.2.0 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate what-bump 1.2.0
[INFO] finished tweaking crates.io crate what-bump 1.2.0
[INFO] tweaked toml for crates.io crate what-bump 1.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate what-bump 1.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ignore v0.4.13
[INFO] [stderr]   Downloaded tera v1.1.0
[INFO] [stderr]   Downloaded simple-error v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ecd57cc9ee8ecb184571cfafb8544579b11e35ecd3434d81454e9180c7dcb92c
[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" "ecd57cc9ee8ecb184571cfafb8544579b11e35ecd3434d81454e9180c7dcb92c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecd57cc9ee8ecb184571cfafb8544579b11e35ecd3434d81454e9180c7dcb92c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecd57cc9ee8ecb184571cfafb8544579b11e35ecd3434d81454e9180c7dcb92c", kill_on_drop: false }`
[INFO] [stdout] ecd57cc9ee8ecb184571cfafb8544579b11e35ecd3434d81454e9180c7dcb92c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--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] 17b27baf96ff6b167fb7dfe3f7bd6944559a76a42f3706b7f90ce66390919074
[INFO] running `Command { std: "docker" "start" "-a" "17b27baf96ff6b167fb7dfe3f7bd6944559a76a42f3706b7f90ce66390919074", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking simple-error v0.2.1
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling libgit2-sys v0.10.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking ignore v0.4.13
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking globwalk v0.7.3
[INFO] [stderr]     Checking stderrlog v0.4.3
[INFO] [stderr]     Checking git2 v0.11.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.5
[INFO] [stderr]     Checking structopt v0.3.12
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking tera v1.1.0
[INFO] [stderr]     Checking what-bump v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `semver::Version`
[INFO] [stdout]   --> src/changelog.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use semver::Version;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `semver::Version`
[INFO] [stdout]   --> src/changelog.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use semver::Version;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 42s
[INFO] running `Command { std: "docker" "inspect" "17b27baf96ff6b167fb7dfe3f7bd6944559a76a42f3706b7f90ce66390919074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17b27baf96ff6b167fb7dfe3f7bd6944559a76a42f3706b7f90ce66390919074", kill_on_drop: false }`
[INFO] [stdout] 17b27baf96ff6b167fb7dfe3f7bd6944559a76a42f3706b7f90ce66390919074