[INFO] cloning repository https://github.com/h-a-n-a/cargo-semver-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/h-a-n-a/cargo-semver-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-a-n-a%2Fcargo-semver-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-a-n-a%2Fcargo-semver-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eee949c36a85602ddb28e14d6c5a616b0921c92e
[INFO] checking h-a-n-a/cargo-semver-demo/eee949c36a85602ddb28e14d6c5a616b0921c92e against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-a-n-a%2Fcargo-semver-demo" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/h-a-n-a/cargo-semver-demo 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 git repo https://github.com/h-a-n-a/cargo-semver-demo
[INFO] finished tweaking git repo https://github.com/h-a-n-a/cargo-semver-demo
[INFO] tweaked toml for git repo https://github.com/h-a-n-a/cargo-semver-demo written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/h-a-n-a/cargo-semver-demo 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] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sourcemap v5.0.0
[INFO] [stderr]   Downloaded sourcemap v6.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 334a2132bc27f9486967cf3d431b9da5854b093633c8f24261da8d6c468d26e0
[INFO] running `Command { std: "docker" "start" "-a" "334a2132bc27f9486967cf3d431b9da5854b093633c8f24261da8d6c468d26e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "334a2132bc27f9486967cf3d431b9da5854b093633c8f24261da8d6c468d26e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "334a2132bc27f9486967cf3d431b9da5854b093633c8f24261da8d6c468d26e0", kill_on_drop: false }`
[INFO] [stdout] 334a2132bc27f9486967cf3d431b9da5854b093633c8f24261da8d6c468d26e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5b62aca534c1f756a86e13b21b277b2deb0fb40d7ba7792c3a2137067023f6ee
[INFO] running `Command { std: "docker" "start" "-a" "5b62aca534c1f756a86e13b21b277b2deb0fb40d7ba7792c3a2137067023f6ee", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking if_chain v1.0.2
[INFO] [stderr]     Checking if_chain v0.1.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking unicode-normalization v0.1.21
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]     Checking serde v1.0.144
[INFO] [stderr]     Checking serde_json v1.0.85
[INFO] [stderr]     Checking sourcemap v6.1.0
[INFO] [stderr]     Checking sourcemap v5.0.0
[INFO] [stderr]     Checking crate-a v0.1.0 (/opt/rustwide/workdir/crates/crate-a)
[INFO] [stderr]     Checking crate-b v0.1.0 (/opt/rustwide/workdir/crates/crate-b)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.59s
[INFO] running `Command { std: "docker" "inspect" "5b62aca534c1f756a86e13b21b277b2deb0fb40d7ba7792c3a2137067023f6ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b62aca534c1f756a86e13b21b277b2deb0fb40d7ba7792c3a2137067023f6ee", kill_on_drop: false }`
[INFO] [stdout] 5b62aca534c1f756a86e13b21b277b2deb0fb40d7ba7792c3a2137067023f6ee