[INFO] cloning repository https://github.com/mohe2015/rplace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mohe2015/rplace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohe2015%2Frplace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohe2015%2Frplace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ebd8e3ed57e6e409358be7bf7f5f36cd28b3e12
[INFO] checking mohe2015/rplace against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohe2015%2Frplace" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mohe2015/rplace 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/mohe2015/rplace
[INFO] finished tweaking git repo https://github.com/mohe2015/rplace
[INFO] tweaked toml for git repo https://github.com/mohe2015/rplace written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mohe2015/rplace 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 heapless v0.7.10
[INFO] [stderr]   Downloaded critical-section v0.2.7
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.7
[INFO] [stderr]   Downloaded rstar v0.9.3
[INFO] [stderr]   Downloaded cortex-m v0.7.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] a69a5b73889f2f137c1a7f93717bfca19bf4184b9766be6f9cc47850d742c4ec
[INFO] running `Command { std: "docker" "start" "-a" "a69a5b73889f2f137c1a7f93717bfca19bf4184b9766be6f9cc47850d742c4ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a69a5b73889f2f137c1a7f93717bfca19bf4184b9766be6f9cc47850d742c4ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a69a5b73889f2f137c1a7f93717bfca19bf4184b9766be6f9cc47850d742c4ec", kill_on_drop: false }`
[INFO] [stdout] a69a5b73889f2f137c1a7f93717bfca19bf4184b9766be6f9cc47850d742c4ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ed9f76b7ebdcf2f22589a5949b4a92bda68f23f149c6c5fc2a0fd398168171b9
[INFO] running `Command { std: "docker" "start" "-a" "ed9f76b7ebdcf2f22589a5949b4a92bda68f23f149c6c5fc2a0fd398168171b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling heapless v0.7.10
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking num_threads v0.1.5
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling time-macros v0.2.4
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]     Checking rstar v0.9.3
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking rplace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.00s
[INFO] running `Command { std: "docker" "inspect" "ed9f76b7ebdcf2f22589a5949b4a92bda68f23f149c6c5fc2a0fd398168171b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed9f76b7ebdcf2f22589a5949b4a92bda68f23f149c6c5fc2a0fd398168171b9", kill_on_drop: false }`
[INFO] [stdout] ed9f76b7ebdcf2f22589a5949b4a92bda68f23f149c6c5fc2a0fd398168171b9
[INFO] checking mohe2015/rplace against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohe2015%2Frplace" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mohe2015/rplace 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/mohe2015/rplace
[INFO] finished tweaking git repo https://github.com/mohe2015/rplace
[INFO] tweaked toml for git repo https://github.com/mohe2015/rplace written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mohe2015/rplace 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] b3d409b4ed96bf6963d043e65ac786ccce6d18571bde784f982d5ebdac2f11e3
[INFO] running `Command { std: "docker" "start" "-a" "b3d409b4ed96bf6963d043e65ac786ccce6d18571bde784f982d5ebdac2f11e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3d409b4ed96bf6963d043e65ac786ccce6d18571bde784f982d5ebdac2f11e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3d409b4ed96bf6963d043e65ac786ccce6d18571bde784f982d5ebdac2f11e3", kill_on_drop: false }`
[INFO] [stdout] b3d409b4ed96bf6963d043e65ac786ccce6d18571bde784f982d5ebdac2f11e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 86d3a39272285929e2a707c9cd49dc884b0fb59389b1d5dd0ec450ef6a56c7ba
[INFO] running `Command { std: "docker" "start" "-a" "86d3a39272285929e2a707c9cd49dc884b0fb59389b1d5dd0ec450ef6a56c7ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling heapless v0.7.10
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling time-macros v0.2.4
[INFO] [stderr]     Checking num_threads v0.1.5
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]     Checking rstar v0.9.3
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking rplace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.20s
[INFO] running `Command { std: "docker" "inspect" "86d3a39272285929e2a707c9cd49dc884b0fb59389b1d5dd0ec450ef6a56c7ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86d3a39272285929e2a707c9cd49dc884b0fb59389b1d5dd0ec450ef6a56c7ba", kill_on_drop: false }`
[INFO] [stdout] 86d3a39272285929e2a707c9cd49dc884b0fb59389b1d5dd0ec450ef6a56c7ba