[INFO] fetching crate rebar 0.0.1...
[INFO] checking rebar-0.0.1 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate rebar 0.0.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rebar 0.0.1 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rebar 0.0.1
[INFO] finished tweaking crates.io crate rebar 0.0.1
[INFO] tweaked toml for crates.io crate rebar 0.0.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "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 term v1.0.0
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f925072a5ad36fec3a70a504de501fcfa17ea9b66d9c53f2591ed68389a47a98
[INFO] running `Command { std: "docker" "start" "-a" "f925072a5ad36fec3a70a504de501fcfa17ea9b66d9c53f2591ed68389a47a98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f925072a5ad36fec3a70a504de501fcfa17ea9b66d9c53f2591ed68389a47a98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f925072a5ad36fec3a70a504de501fcfa17ea9b66d9c53f2591ed68389a47a98", kill_on_drop: false }`
[INFO] [stdout] f925072a5ad36fec3a70a504de501fcfa17ea9b66d9c53f2591ed68389a47a98
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 296d8ef981228a31169d1420e066ab296ef3c713a193215cef9341dba022fd39
[INFO] running `Command { std: "docker" "start" "-a" "296d8ef981228a31169d1420e066ab296ef3c713a193215cef9341dba022fd39", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking term v1.0.0
[INFO] [stderr]     Checking rebar v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `collections`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(collections)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `collections`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(collections)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `from_str` found for struct `String` in the current scope
[INFO] [stdout]   --> src/lib.rs:25:28
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut line = String::from_str("\r");
[INFO] [stdout]    |                            ^^^^^^^^ function or associated item not found in `String`
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `String` consider using one of the following associated functions:
[INFO] [stdout]       String::new
[INFO] [stdout]       String::with_capacity
[INFO] [stdout]       String::try_with_capacity
[INFO] [stdout]       String::from_utf8
[INFO] [stdout]       and 9 others
[INFO] [stdout]   --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/alloc/src/string.rs:445:5
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `FromStr` which provides `from_str` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 2  + use std::str::FromStr;
[INFO] [stdout]    |
[INFO] [stdout] help: there is an associated function `from` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut line = String::from("\r");
[INFO] [stdout]    |                            ~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `from_str` found for struct `String` in the current scope
[INFO] [stdout]   --> src/lib.rs:25:28
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut line = String::from_str("\r");
[INFO] [stdout]    |                            ^^^^^^^^ function or associated item not found in `String`
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `String` consider using one of the following associated functions:
[INFO] [stdout]       String::new
[INFO] [stdout]       String::with_capacity
[INFO] [stdout]       String::try_with_capacity
[INFO] [stdout]       String::from_utf8
[INFO] [stdout]       and 9 others
[INFO] [stdout]   --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/alloc/src/string.rs:445:5
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `FromStr` which provides `from_str` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 2  + use std::str::FromStr;
[INFO] [stdout]    |
[INFO] [stdout] help: there is an associated function `from` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut line = String::from("\r");
[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: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rebar` (lib test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rebar` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "296d8ef981228a31169d1420e066ab296ef3c713a193215cef9341dba022fd39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "296d8ef981228a31169d1420e066ab296ef3c713a193215cef9341dba022fd39", kill_on_drop: false }`
[INFO] [stdout] 296d8ef981228a31169d1420e066ab296ef3c713a193215cef9341dba022fd39