[INFO] cloning repository https://github.com/code-ex0/rust.guess_numbre
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/code-ex0/rust.guess_numbre" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-ex0%2Frust.guess_numbre", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-ex0%2Frust.guess_numbre'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30e285e991393e07b2bfebf0fa18cf8b3ee939ec
[INFO] checking code-ex0/rust.guess_numbre against master#96df4943409564a187894018f15f795426dc2e1f for pr-118968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-ex0%2Frust.guess_numbre" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/code-ex0/rust.guess_numbre on toolchain 96df4943409564a187894018f15f795426dc2e1f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+96df4943409564a187894018f15f795426dc2e1f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/code-ex0/rust.guess_numbre
[INFO] finished tweaking git repo https://github.com/code-ex0/rust.guess_numbre
[INFO] tweaked toml for git repo https://github.com/code-ex0/rust.guess_numbre written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/code-ex0/rust.guess_numbre 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" "+96df4943409564a187894018f15f795426dc2e1f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking code-ex0/rust.guess_numbre against try#7e4f74fb8736fea8f455bb6e094122965ae8f4cd for pr-118968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-ex0%2Frust.guess_numbre" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/code-ex0/rust.guess_numbre on toolchain 7e4f74fb8736fea8f455bb6e094122965ae8f4cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/code-ex0/rust.guess_numbre
[INFO] finished tweaking git repo https://github.com/code-ex0/rust.guess_numbre
[INFO] tweaked toml for git repo https://github.com/code-ex0/rust.guess_numbre written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/code-ex0/rust.guess_numbre 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" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking code-ex0/rust.guess_numbre against try#7e4f74fb8736fea8f455bb6e094122965ae8f4cd for pr-118968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-ex0%2Frust.guess_numbre" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/code-ex0/rust.guess_numbre on toolchain 7e4f74fb8736fea8f455bb6e094122965ae8f4cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/code-ex0/rust.guess_numbre
[INFO] finished tweaking git repo https://github.com/code-ex0/rust.guess_numbre
[INFO] tweaked toml for git repo https://github.com/code-ex0/rust.guess_numbre written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/code-ex0/rust.guess_numbre 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" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 savefile-derive v0.7.4
[INFO] [stderr]   Downloaded savefile v0.7.4
[INFO] [stderr]   Downloaded ctrlc v3.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 399b43cd79bd8b9fb1728a16e8c03e0f822a363018ce7ab7fd2e6c20b15bf0bc
[INFO] running `Command { std: "docker" "start" "-a" "399b43cd79bd8b9fb1728a16e8c03e0f822a363018ce7ab7fd2e6c20b15bf0bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "399b43cd79bd8b9fb1728a16e8c03e0f822a363018ce7ab7fd2e6c20b15bf0bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "399b43cd79bd8b9fb1728a16e8c03e0f822a363018ce7ab7fd2e6c20b15bf0bc", kill_on_drop: false }`
[INFO] [stdout] 399b43cd79bd8b9fb1728a16e8c03e0f822a363018ce7ab7fd2e6c20b15bf0bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2c911be50fdaa1744e6aedb97257b6a2d0a4bf4b58e00e38e4082a6b847bb4a
[INFO] running `Command { std: "docker" "start" "-a" "c2c911be50fdaa1744e6aedb97257b6a2d0a4bf4b58e00e38e4082a6b847bb4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling savefile v0.7.4
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]    Compiling savefile-derive v0.7.4
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking ctrlc v3.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/savefile-0.7.4/src/lib.rs:6:40
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature="nightly", feature(const_generics))]
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![feature(adt_const_params)]` and `#![feature(generic_const_exprs)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `integer_atomics`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/savefile-0.7.4/src/lib.rs:5:40
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature="nightly", feature(integer_atomics))]
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0557, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `savefile` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c2c911be50fdaa1744e6aedb97257b6a2d0a4bf4b58e00e38e4082a6b847bb4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2c911be50fdaa1744e6aedb97257b6a2d0a4bf4b58e00e38e4082a6b847bb4a", kill_on_drop: false }`
[INFO] [stdout] c2c911be50fdaa1744e6aedb97257b6a2d0a4bf4b58e00e38e4082a6b847bb4a