[INFO] cloning repository https://github.com/benstaiger/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benstaiger/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenstaiger%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenstaiger%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4f59c4a1aae881ab6eddfc03df47c149ef0702e
[INFO] checking benstaiger/rust-playground against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenstaiger%2Frust-playground" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benstaiger/rust-playground on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benstaiger/rust-playground
[INFO] finished tweaking git repo https://github.com/benstaiger/rust-playground
[INFO] tweaked toml for git repo https://github.com/benstaiger/rust-playground written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/benstaiger/rust-playground 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-core v0.1.25
[INFO] [stderr]   Downloaded tracing v0.1.33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52b3b43d7db036991295a25b8dd6ec39880751533657024582bcdc9ae46765b3
[INFO] running `Command { std: "docker" "start" "-a" "52b3b43d7db036991295a25b8dd6ec39880751533657024582bcdc9ae46765b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52b3b43d7db036991295a25b8dd6ec39880751533657024582bcdc9ae46765b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52b3b43d7db036991295a25b8dd6ec39880751533657024582bcdc9ae46765b3", kill_on_drop: false }`
[INFO] [stdout] 52b3b43d7db036991295a25b8dd6ec39880751533657024582bcdc9ae46765b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd62b4413d99cfaf99ed401bb69b1776d1f386c944a48aa0d995cef45d2c572b
[INFO] running `Command { std: "docker" "start" "-a" "cd62b4413d99cfaf99ed401bb69b1776d1f386c944a48aa0d995cef45d2c572b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking tracing-core v0.1.25
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking ipnet v2.4.0
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]     Checking parking_lot_core v0.9.2
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking openssl-sys v0.9.72
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking openssl v0.10.38
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking native-tls v0.2.10
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking tracing v0.1.33
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.7.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.10
[INFO] [stderr]     Checking rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.19s
[INFO] running `Command { std: "docker" "inspect" "cd62b4413d99cfaf99ed401bb69b1776d1f386c944a48aa0d995cef45d2c572b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd62b4413d99cfaf99ed401bb69b1776d1f386c944a48aa0d995cef45d2c572b", kill_on_drop: false }`
[INFO] [stdout] cd62b4413d99cfaf99ed401bb69b1776d1f386c944a48aa0d995cef45d2c572b
[INFO] checking benstaiger/rust-playground against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenstaiger%2Frust-playground" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benstaiger/rust-playground on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benstaiger/rust-playground
[INFO] finished tweaking git repo https://github.com/benstaiger/rust-playground
[INFO] tweaked toml for git repo https://github.com/benstaiger/rust-playground written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/benstaiger/rust-playground 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54e82d8a0e0e8645382d78636ae7525082a591be9c51aa416fd021e1ba6e235c
[INFO] running `Command { std: "docker" "start" "-a" "54e82d8a0e0e8645382d78636ae7525082a591be9c51aa416fd021e1ba6e235c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54e82d8a0e0e8645382d78636ae7525082a591be9c51aa416fd021e1ba6e235c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54e82d8a0e0e8645382d78636ae7525082a591be9c51aa416fd021e1ba6e235c", kill_on_drop: false }`
[INFO] [stdout] 54e82d8a0e0e8645382d78636ae7525082a591be9c51aa416fd021e1ba6e235c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0adacd396c977bd5e5ca99e1656afe47c103f429fde84b99cda2e4b890f4e49b
[INFO] running `Command { std: "docker" "start" "-a" "0adacd396c977bd5e5ca99e1656afe47c103f429fde84b99cda2e4b890f4e49b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking tracing-core v0.1.25
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking ipnet v2.4.0
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]     Checking parking_lot_core v0.9.2
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking openssl-sys v0.9.72
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking openssl v0.10.38
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking native-tls v0.2.10
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking tracing v0.1.33
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.7.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.10
[INFO] [stderr]     Checking rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.87s
[INFO] running `Command { std: "docker" "inspect" "0adacd396c977bd5e5ca99e1656afe47c103f429fde84b99cda2e4b890f4e49b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0adacd396c977bd5e5ca99e1656afe47c103f429fde84b99cda2e4b890f4e49b", kill_on_drop: false }`
[INFO] [stdout] 0adacd396c977bd5e5ca99e1656afe47c103f429fde84b99cda2e4b890f4e49b