[INFO] cloning repository https://github.com/skardas/MerkleTreeTutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/skardas/MerkleTreeTutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskardas%2FMerkleTreeTutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskardas%2FMerkleTreeTutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b6516129eb7346dca72ebc3433ca4233133412eb [INFO] checking skardas/MerkleTreeTutorial against try#d4af306fdd6ab261dfeb0aa57301d08b31b2dd92 for pr-105483 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskardas%2FMerkleTreeTutorial" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/skardas/MerkleTreeTutorial on toolchain d4af306fdd6ab261dfeb0aa57301d08b31b2dd92 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4af306fdd6ab261dfeb0aa57301d08b31b2dd92" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/skardas/MerkleTreeTutorial [INFO] finished tweaking git repo https://github.com/skardas/MerkleTreeTutorial [INFO] tweaked toml for git repo https://github.com/skardas/MerkleTreeTutorial written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/skardas/MerkleTreeTutorial already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4af306fdd6ab261dfeb0aa57301d08b31b2dd92" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+d4af306fdd6ab261dfeb0aa57301d08b31b2dd92" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ecde0a604fab38381ca650abab0fb7f9436cf1180d4f325910dc7e136f2003a2 [INFO] running `Command { std: "docker" "start" "-a" "ecde0a604fab38381ca650abab0fb7f9436cf1180d4f325910dc7e136f2003a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ecde0a604fab38381ca650abab0fb7f9436cf1180d4f325910dc7e136f2003a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ecde0a604fab38381ca650abab0fb7f9436cf1180d4f325910dc7e136f2003a2", kill_on_drop: false }` [INFO] [stdout] ecde0a604fab38381ca650abab0fb7f9436cf1180d4f325910dc7e136f2003a2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+d4af306fdd6ab261dfeb0aa57301d08b31b2dd92" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 746a5a53184c6e903c15a62f53e9bebaddcf2c2cbdd43fd7b6567a231ce99cca [INFO] running `Command { std: "docker" "start" "-a" "746a5a53184c6e903c15a62f53e9bebaddcf2c2cbdd43fd7b6567a231ce99cca", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Compiling ucd-trie v0.1.3 [INFO] [stderr] Compiling libc v0.2.94 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking tracing-core v0.1.18 [INFO] [stderr] Checking once_cell v1.7.2 [INFO] [stderr] Checking rand_xorshift v0.2.0 [INFO] [stderr] Compiling pest v2.1.3 [INFO] [stderr] Checking pin-project-lite v0.2.6 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking thread_local v1.1.3 [INFO] [stderr] Checking sharded-slab v0.1.1 [INFO] [stderr] Compiling typenum v1.13.0 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Checking tracing-log v0.1.2 [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling gcc v0.3.55 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking subtle v2.4.0 [INFO] [stderr] Checking opaque-debug v0.3.0 [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling num-bigint v0.4.0 [INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.24/src/serialize.rs:1155:5 [INFO] [stdout] | [INFO] [stdout] 1155 | fn decode(d: &mut D) -> Result, D::Error> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...so that the type `T` will meet its required lifetime bounds... [INFO] [stdout] | [INFO] [stdout] note: ...that is required by this bound [INFO] [stdout] help: consider adding an explicit lifetime bound... [INFO] [stdout] | [INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T> [INFO] [stdout] | +++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Compiling semver-parser v0.10.2 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking ark-std v0.2.0 [INFO] [stderr] Checking ark-serialize v0.2.0 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Compiling semver v0.11.0 [INFO] [stderr] Compiling rustc_version v0.3.3 [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0310`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rustc-serialize` due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "746a5a53184c6e903c15a62f53e9bebaddcf2c2cbdd43fd7b6567a231ce99cca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "746a5a53184c6e903c15a62f53e9bebaddcf2c2cbdd43fd7b6567a231ce99cca", kill_on_drop: false }` [INFO] [stdout] 746a5a53184c6e903c15a62f53e9bebaddcf2c2cbdd43fd7b6567a231ce99cca