[INFO] fetching crate yabf 0.3.0...
[INFO] checking yabf-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate yabf 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate yabf 0.3.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yabf 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate yabf 0.3.0
[INFO] tweaked toml for crates.io crate yabf 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate yabf 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded half v1.8.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.14
[INFO] [stderr]   Downloaded num-bigint v0.4.2
[INFO] [stderr]   Downloaded libc v0.2.104
[INFO] [stderr]   Downloaded vob v3.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9daf9786aac20c90b4ef991d2393aa521d4d52bd575bca7090dbe6bba163fa4
[INFO] running `Command { std: "docker" "start" "-a" "d9daf9786aac20c90b4ef991d2393aa521d4d52bd575bca7090dbe6bba163fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9daf9786aac20c90b4ef991d2393aa521d4d52bd575bca7090dbe6bba163fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9daf9786aac20c90b4ef991d2393aa521d4d52bd575bca7090dbe6bba163fa4", kill_on_drop: false }`
[INFO] [stdout] d9daf9786aac20c90b4ef991d2393aa521d4d52bd575bca7090dbe6bba163fa4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5eddce64c1492f4a768db7be22f87c1a8414d286e07938a7b841edb025b768d3
[INFO] running `Command { std: "docker" "start" "-a" "5eddce64c1492f4a768db7be22f87c1a8414d286e07938a7b841edb025b768d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking half v1.8.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking yabf v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling vob v3.0.0
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking serde_json v1.0.68
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: associated function `fill` is never used
[INFO] [stdout]   --> benches/bench.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     trait GrowingVob {
[INFO] [stdout]    |           ---------- associated function in this trait
[INFO] [stdout] 88 |         /// Will create a new Vob and fill it with `default`
[INFO] [stdout] 89 |         fn fill(initial_size: usize, default: bool) -> VobU32;
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.75s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "5eddce64c1492f4a768db7be22f87c1a8414d286e07938a7b841edb025b768d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eddce64c1492f4a768db7be22f87c1a8414d286e07938a7b841edb025b768d3", kill_on_drop: false }`
[INFO] [stdout] 5eddce64c1492f4a768db7be22f87c1a8414d286e07938a7b841edb025b768d3
[INFO] checking yabf-0.3.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate yabf 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate yabf 0.3.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yabf 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate yabf 0.3.0
[INFO] tweaked toml for crates.io crate yabf 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate yabf 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ecc03880859638251ffb9a68db88dc3b4326ba9f9911a41249070d9a3e6e0c9
[INFO] running `Command { std: "docker" "start" "-a" "8ecc03880859638251ffb9a68db88dc3b4326ba9f9911a41249070d9a3e6e0c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ecc03880859638251ffb9a68db88dc3b4326ba9f9911a41249070d9a3e6e0c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ecc03880859638251ffb9a68db88dc3b4326ba9f9911a41249070d9a3e6e0c9", kill_on_drop: false }`
[INFO] [stdout] 8ecc03880859638251ffb9a68db88dc3b4326ba9f9911a41249070d9a3e6e0c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be7b847bbd54f141ae69d18e85430a377d5344ba3560880a960ce7bf6f57fe4f
[INFO] running `Command { std: "docker" "start" "-a" "be7b847bbd54f141ae69d18e85430a377d5344ba3560880a960ce7bf6f57fe4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]     Checking half v1.8.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking ppv-lite86 v0.2.14
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking yabf v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]    Compiling vob v3.0.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_json v1.0.68
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: associated function `fill` is never used
[INFO] [stdout]   --> benches/bench.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     trait GrowingVob {
[INFO] [stdout]    |           ---------- associated function in this trait
[INFO] [stdout] 88 |         /// Will create a new Vob and fill it with `default`
[INFO] [stdout] 89 |         fn fill(initial_size: usize, default: bool) -> VobU32;
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.69s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "be7b847bbd54f141ae69d18e85430a377d5344ba3560880a960ce7bf6f57fe4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be7b847bbd54f141ae69d18e85430a377d5344ba3560880a960ce7bf6f57fe4f", kill_on_drop: false }`
[INFO] [stdout] be7b847bbd54f141ae69d18e85430a377d5344ba3560880a960ce7bf6f57fe4f