[INFO] cloning repository https://github.com/samuelvanderwaal/taxmat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samuelvanderwaal/taxmat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuelvanderwaal%2Ftaxmat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuelvanderwaal%2Ftaxmat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e8148113598aa98f4ba761a7865f654f1199936
[INFO] checking samuelvanderwaal/taxmat against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuelvanderwaal%2Ftaxmat" "/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/samuelvanderwaal/taxmat 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/samuelvanderwaal/taxmat
[INFO] finished tweaking git repo https://github.com/samuelvanderwaal/taxmat
[INFO] tweaked toml for git repo https://github.com/samuelvanderwaal/taxmat written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/samuelvanderwaal/taxmat 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]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_cmd v1.0.4
[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] 6e1a6652153e3e9e1db69207d31dc80c9d2af7197369944439d8aa15ba5cb53b
[INFO] running `Command { std: "docker" "start" "-a" "6e1a6652153e3e9e1db69207d31dc80c9d2af7197369944439d8aa15ba5cb53b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e1a6652153e3e9e1db69207d31dc80c9d2af7197369944439d8aa15ba5cb53b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e1a6652153e3e9e1db69207d31dc80c9d2af7197369944439d8aa15ba5cb53b", kill_on_drop: false }`
[INFO] [stdout] 6e1a6652153e3e9e1db69207d31dc80c9d2af7197369944439d8aa15ba5cb53b
[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] eea70a76b77bc7592b10ff4f2b6c500fdb0e5a9af74d6c3d678f319fc4c02195
[INFO] running `Command { std: "docker" "start" "-a" "eea70a76b77bc7592b10ff4f2b6c500fdb0e5a9af74d6c3d678f319fc4c02195", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking predicates v1.0.8
[INFO] [stderr]     Checking predicates-tree v1.0.2
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking assert_cmd v1.0.4
[INFO] [stderr]     Checking taxmat v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.56s
[INFO] running `Command { std: "docker" "inspect" "eea70a76b77bc7592b10ff4f2b6c500fdb0e5a9af74d6c3d678f319fc4c02195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eea70a76b77bc7592b10ff4f2b6c500fdb0e5a9af74d6c3d678f319fc4c02195", kill_on_drop: false }`
[INFO] [stdout] eea70a76b77bc7592b10ff4f2b6c500fdb0e5a9af74d6c3d678f319fc4c02195