[INFO] cloning repository https://github.com/stallmanifold/rtfm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stallmanifold/rtfm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstallmanifold%2Frtfm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstallmanifold%2Frtfm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9eaeea4831ae64234d7c34d1df04d90917b6c99
[INFO] checking stallmanifold/rtfm against master#3139ff09e9d07f7700f8d15ed25a231e29c43627 for pr-121848-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstallmanifold%2Frtfm" "/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/stallmanifold/rtfm on toolchain 3139ff09e9d07f7700f8d15ed25a231e29c43627
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3139ff09e9d07f7700f8d15ed25a231e29c43627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/stallmanifold/rtfm
[INFO] finished tweaking git repo https://github.com/stallmanifold/rtfm
[INFO] tweaked toml for git repo https://github.com/stallmanifold/rtfm written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/stallmanifold/rtfm 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" "+3139ff09e9d07f7700f8d15ed25a231e29c43627" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_isaac v0.1.0
[INFO] [stderr]   Downloaded rand v0.6.0
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+3139ff09e9d07f7700f8d15ed25a231e29c43627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39e1e36b5b3984a8efa0b520757446db3d113b4399a40ea398a8e1952c6b46f3
[INFO] running `Command { std: "docker" "start" "-a" "39e1e36b5b3984a8efa0b520757446db3d113b4399a40ea398a8e1952c6b46f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39e1e36b5b3984a8efa0b520757446db3d113b4399a40ea398a8e1952c6b46f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39e1e36b5b3984a8efa0b520757446db3d113b4399a40ea398a8e1952c6b46f3", kill_on_drop: false }`
[INFO] [stdout] 39e1e36b5b3984a8efa0b520757446db3d113b4399a40ea398a8e1952c6b46f3
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+3139ff09e9d07f7700f8d15ed25a231e29c43627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fe41f0972e2eaaa63b783e10eff1b0fd42e0b6d0c3da7cd9e9ecdd7d59c2ccb
[INFO] running `Command { std: "docker" "start" "-a" "9fe41f0972e2eaaa63b783e10eff1b0fd42e0b6d0c3da7cd9e9ecdd7d59c2ccb", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.0
[INFO] [stderr]     Checking rand_isaac v0.1.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.21
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking toml v0.4.8
[INFO] [stderr]     Checking rtfm v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.11s
[INFO] running `Command { std: "docker" "inspect" "9fe41f0972e2eaaa63b783e10eff1b0fd42e0b6d0c3da7cd9e9ecdd7d59c2ccb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fe41f0972e2eaaa63b783e10eff1b0fd42e0b6d0c3da7cd9e9ecdd7d59c2ccb", kill_on_drop: false }`
[INFO] [stdout] 9fe41f0972e2eaaa63b783e10eff1b0fd42e0b6d0c3da7cd9e9ecdd7d59c2ccb