[INFO] fetching crate qt-json-rs 1.0.1...
[INFO] checking qt-json-rs-1.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate qt-json-rs 1.0.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate qt-json-rs 1.0.1 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 qt-json-rs 1.0.1
[INFO] finished tweaking crates.io crate qt-json-rs 1.0.1
[INFO] tweaked toml for crates.io crate qt-json-rs 1.0.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate qt-json-rs 1.0.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 79d7ea973f81e4992d9a272772b97a20a2612d3a27d6b3a88118b1dad7a86ead
[INFO] running `Command { std: "docker" "start" "-a" "79d7ea973f81e4992d9a272772b97a20a2612d3a27d6b3a88118b1dad7a86ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79d7ea973f81e4992d9a272772b97a20a2612d3a27d6b3a88118b1dad7a86ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79d7ea973f81e4992d9a272772b97a20a2612d3a27d6b3a88118b1dad7a86ead", kill_on_drop: false }`
[INFO] [stdout] 79d7ea973f81e4992d9a272772b97a20a2612d3a27d6b3a88118b1dad7a86ead
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f609a7e8789358b1720f5f36d6e09fe6c7dd8b85b46d5361153d33669d90d41d
[INFO] running `Command { std: "docker" "start" "-a" "f609a7e8789358b1720f5f36d6e09fe6c7dd8b85b46d5361153d33669d90d41d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking qt-json-rs v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.74s
[INFO] running `Command { std: "docker" "inspect" "f609a7e8789358b1720f5f36d6e09fe6c7dd8b85b46d5361153d33669d90d41d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f609a7e8789358b1720f5f36d6e09fe6c7dd8b85b46d5361153d33669d90d41d", kill_on_drop: false }`
[INFO] [stdout] f609a7e8789358b1720f5f36d6e09fe6c7dd8b85b46d5361153d33669d90d41d
[INFO] checking qt-json-rs-1.0.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate qt-json-rs 1.0.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate qt-json-rs 1.0.1 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 qt-json-rs 1.0.1
[INFO] finished tweaking crates.io crate qt-json-rs 1.0.1
[INFO] tweaked toml for crates.io crate qt-json-rs 1.0.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate qt-json-rs 1.0.1 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] cebb9217dac99f736e2b369f21667081492f43b09bcf67f4c1a0f1d4229453c5
[INFO] running `Command { std: "docker" "start" "-a" "cebb9217dac99f736e2b369f21667081492f43b09bcf67f4c1a0f1d4229453c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cebb9217dac99f736e2b369f21667081492f43b09bcf67f4c1a0f1d4229453c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cebb9217dac99f736e2b369f21667081492f43b09bcf67f4c1a0f1d4229453c5", kill_on_drop: false }`
[INFO] [stdout] cebb9217dac99f736e2b369f21667081492f43b09bcf67f4c1a0f1d4229453c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] af29e5107eb911f25596f1f6d952a18e7818e73ee5f46ad34ecf6d7486b0845c
[INFO] running `Command { std: "docker" "start" "-a" "af29e5107eb911f25596f1f6d952a18e7818e73ee5f46ad34ecf6d7486b0845c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking qt-json-rs v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.00s
[INFO] running `Command { std: "docker" "inspect" "af29e5107eb911f25596f1f6d952a18e7818e73ee5f46ad34ecf6d7486b0845c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af29e5107eb911f25596f1f6d952a18e7818e73ee5f46ad34ecf6d7486b0845c", kill_on_drop: false }`
[INFO] [stdout] af29e5107eb911f25596f1f6d952a18e7818e73ee5f46ad34ecf6d7486b0845c