[INFO] cloning repository https://github.com/JPMoresmau/rust-linear
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JPMoresmau/rust-linear" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJPMoresmau%2Frust-linear", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJPMoresmau%2Frust-linear'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79bd3691378ff3f4a00fe1468aa8b09bba26bf3b
[INFO] checking JPMoresmau/rust-linear against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJPMoresmau%2Frust-linear" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JPMoresmau/rust-linear 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/JPMoresmau/rust-linear
[INFO] finished tweaking git repo https://github.com/JPMoresmau/rust-linear
[INFO] tweaked toml for git repo https://github.com/JPMoresmau/rust-linear written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JPMoresmau/rust-linear 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 rand_core v0.4.0
[INFO] [stderr]   Downloaded rand_jitter v0.1.3
[INFO] [stderr]   Downloaded log v0.4.6
[INFO] [stderr]   Downloaded rand_os v0.1.2
[INFO] [stderr]   Downloaded cfg-if v0.1.7
[INFO] [stderr]   Downloaded wincolor v1.0.1
[INFO] [stderr]   Downloaded autocfg v0.1.2
[INFO] [stderr]   Downloaded redox_syscall v0.1.51
[INFO] [stderr]   Downloaded humantime v1.2.0
[INFO] [stderr]   Downloaded memchr v2.2.0
[INFO] [stderr]   Downloaded termcolor v1.0.4
[INFO] [stderr]   Downloaded env_logger v0.6.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.5
[INFO] [stderr]   Downloaded regex v1.1.2
[INFO] [stderr]   Downloaded libc v0.2.49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b6533c9e0d950c630328881f674332df97e050897b316a801496a35fbea64b08
[INFO] running `Command { std: "docker" "start" "-a" "b6533c9e0d950c630328881f674332df97e050897b316a801496a35fbea64b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6533c9e0d950c630328881f674332df97e050897b316a801496a35fbea64b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6533c9e0d950c630328881f674332df97e050897b316a801496a35fbea64b08", kill_on_drop: false }`
[INFO] [stdout] b6533c9e0d950c630328881f674332df97e050897b316a801496a35fbea64b08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 15394809e94e26373bcc1d56585149f5b555b13b42a81208da231eb9da2fb3ac
[INFO] running `Command { std: "docker" "start" "-a" "15394809e94e26373bcc1d56585149f5b555b13b42a81208da231eb9da2fb3ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking linear v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.55s
[INFO] running `Command { std: "docker" "inspect" "15394809e94e26373bcc1d56585149f5b555b13b42a81208da231eb9da2fb3ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15394809e94e26373bcc1d56585149f5b555b13b42a81208da231eb9da2fb3ac", kill_on_drop: false }`
[INFO] [stdout] 15394809e94e26373bcc1d56585149f5b555b13b42a81208da231eb9da2fb3ac
[INFO] checking JPMoresmau/rust-linear against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJPMoresmau%2Frust-linear" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JPMoresmau/rust-linear 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 git repo https://github.com/JPMoresmau/rust-linear
[INFO] finished tweaking git repo https://github.com/JPMoresmau/rust-linear
[INFO] tweaked toml for git repo https://github.com/JPMoresmau/rust-linear written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JPMoresmau/rust-linear 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 63939f63450cce1d6736efe0017612bb32d27498174599bc2030b8e5b083cabd
[INFO] running `Command { std: "docker" "start" "-a" "63939f63450cce1d6736efe0017612bb32d27498174599bc2030b8e5b083cabd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63939f63450cce1d6736efe0017612bb32d27498174599bc2030b8e5b083cabd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63939f63450cce1d6736efe0017612bb32d27498174599bc2030b8e5b083cabd", kill_on_drop: false }`
[INFO] [stdout] 63939f63450cce1d6736efe0017612bb32d27498174599bc2030b8e5b083cabd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d59a54f855c2d130be54787e131f5da684a082980459731585f96f6b65dbb777
[INFO] running `Command { std: "docker" "start" "-a" "d59a54f855c2d130be54787e131f5da684a082980459731585f96f6b65dbb777", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking linear v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.72s
[INFO] running `Command { std: "docker" "inspect" "d59a54f855c2d130be54787e131f5da684a082980459731585f96f6b65dbb777", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d59a54f855c2d130be54787e131f5da684a082980459731585f96f6b65dbb777", kill_on_drop: false }`
[INFO] [stdout] d59a54f855c2d130be54787e131f5da684a082980459731585f96f6b65dbb777