[INFO] cloning repository https://github.com/dominuskernel/test-nikel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dominuskernel/test-nikel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdominuskernel%2Ftest-nikel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdominuskernel%2Ftest-nikel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 959cb00e93908eaf5bd2c17cee222d0af54c57ef
[INFO] checking dominuskernel/test-nikel against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdominuskernel%2Ftest-nikel" "/workspace/builds/worker-115/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-115/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dominuskernel/test-nikel on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dominuskernel/test-nikel
[INFO] finished tweaking git repo https://github.com/dominuskernel/test-nikel
[INFO] tweaked toml for git repo https://github.com/dominuskernel/test-nikel written to /workspace/builds/worker-115/source/Cargo.toml
[INFO] crate git repo https://github.com/dominuskernel/test-nikel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scan_fmt v0.1.1
[INFO] [stderr]   Downloaded url v0.2.38
[INFO] [stderr]   Downloaded libc v0.2.8
[INFO] [stderr]   Downloaded bson v0.1.5
[INFO] [stderr]   Downloaded num_cpus v0.2.11
[INFO] [stderr]   Downloaded httparse v1.1.1
[INFO] [stderr]   Downloaded rust-crypto v0.2.34
[INFO] [stderr]   Downloaded cookie v0.2.2
[INFO] [stderr]   Downloaded bufstream v0.1.1
[INFO] [stderr]   Downloaded regex-syntax v0.2.5
[INFO] [stderr]   Downloaded regex v0.1.55
[INFO] [stderr]   Downloaded nickel v0.7.3
[INFO] [stderr]   Downloaded gcc v0.3.25
[INFO] [stderr]   Downloaded hyper v0.8.0
[INFO] [stderr]   Downloaded openssl-sys-extras v0.7.8
[INFO] [stderr]   Downloaded url v0.5.7
[INFO] [stderr] warning: TOML file found which contains invalid syntax and will soon not parse
[INFO] [stderr] at `/workspace/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-0.5.7/Cargo.toml`.
[INFO] [stderr] 
[INFO] [stderr] The TOML spec requires newlines after table definitions (e.g., `[a] b = 1` is
[INFO] [stderr] invalid), but this file has a table header which does not have a newline after
[INFO] [stderr] it. A newline needs to be added and this warning will soon become a hard error
[INFO] [stderr] in the future.
[INFO] [stderr]   Downloaded openssl v0.7.8
[INFO] [stderr]   Downloaded mime v0.2.0
[INFO] [stderr]   Downloaded openssl-sys v0.7.8
[INFO] [stderr]   Downloaded groupable v0.2.0
[INFO] [stderr]   Downloaded chrono v0.2.20
[INFO] [stderr]   Downloaded serde v0.6.15
[INFO] [stderr]   Downloaded aho-corasick v0.5.1
[INFO] [stderr]   Downloaded unicase v1.3.0
[INFO] [stderr]   Downloaded mime v0.1.3
[INFO] [stderr]   Downloaded mustache v0.6.3
[INFO] [stderr]   Downloaded memchr v0.1.10
[INFO] [stderr]   Downloaded uuid v0.1.18
[INFO] [stderr]   Downloaded num v0.1.31
[INFO] [stderr]   Downloaded separator v0.3.1
[INFO] [stderr]   Downloaded textnonce v0.1.2
[INFO] [stderr]   Downloaded mongodb v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b282d2ae600f1701951fba4b9b6983bc3c49ad00692d47c881d3cf0826e8bc4f
[INFO] running `Command { std: "docker" "start" "-a" "b282d2ae600f1701951fba4b9b6983bc3c49ad00692d47c881d3cf0826e8bc4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b282d2ae600f1701951fba4b9b6983bc3c49ad00692d47c881d3cf0826e8bc4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b282d2ae600f1701951fba4b9b6983bc3c49ad00692d47c881d3cf0826e8bc4f", kill_on_drop: false }`
[INFO] [stdout] b282d2ae600f1701951fba4b9b6983bc3c49ad00692d47c881d3cf0826e8bc4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bde2e5e2eb56bbe59cb56f32666eb03e675a637cacecdce419755241f64c2d3d
[INFO] running `Command { std: "docker" "start" "-a" "bde2e5e2eb56bbe59cb56f32666eb03e675a637cacecdce419755241f64c2d3d", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: TOML file found which contains invalid syntax and will soon not parse
[INFO] [stderr] at `/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-0.5.7/Cargo.toml`.
[INFO] [stderr] 
[INFO] [stderr] The TOML spec requires newlines after table definitions (e.g., `[a] b = 1` is
[INFO] [stderr] invalid), but this file has a table header which does not have a newline after
[INFO] [stderr] it. A newline needs to be added and this warning will soon become a hard error
[INFO] [stderr] in the future.
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "bde2e5e2eb56bbe59cb56f32666eb03e675a637cacecdce419755241f64c2d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bde2e5e2eb56bbe59cb56f32666eb03e675a637cacecdce419755241f64c2d3d", kill_on_drop: false }`
[INFO] [stdout] bde2e5e2eb56bbe59cb56f32666eb03e675a637cacecdce419755241f64c2d3d