[INFO] fetching crate from_error_scope 0.0.1...
[INFO] checking from_error_scope-0.0.1 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate from_error_scope 0.0.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate from_error_scope 0.0.1 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate from_error_scope 0.0.1
[INFO] finished tweaking crates.io crate from_error_scope 0.0.1
[INFO] tweaked toml for crates.io crate from_error_scope 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" "+506512391b1a75ae450d36c9420978402a91abcc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7143ee4423023c9e36f29eb16f5be0d076442c2e0fda7ccc4e232fb68f3567c
[INFO] running `Command { std: "docker" "start" "-a" "d7143ee4423023c9e36f29eb16f5be0d076442c2e0fda7ccc4e232fb68f3567c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7143ee4423023c9e36f29eb16f5be0d076442c2e0fda7ccc4e232fb68f3567c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7143ee4423023c9e36f29eb16f5be0d076442c2e0fda7ccc4e232fb68f3567c", kill_on_drop: false }`
[INFO] [stdout] d7143ee4423023c9e36f29eb16f5be0d076442c2e0fda7ccc4e232fb68f3567c
[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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 119348ae1a22e9a897bc887c59253c9dd8200f0d9a20ba9d35082f14c0365c77
[INFO] running `Command { std: "docker" "start" "-a" "119348ae1a22e9a897bc887c59253c9dd8200f0d9a20ba9d35082f14c0365c77", kill_on_drop: false }`
[INFO] [stderr]     Checking from_error_scope v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::io::CharsError`
[INFO] [stdout]   --> examples/simple.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::io::CharsError;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^ no `CharsError` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `io`
[INFO] [stdout]   --> examples/simple.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(core, io)]
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `from_error` found for struct `ErrorScope` in the current scope
[INFO] [stdout]   --> examples/simple.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct ErrorScope;
[INFO] [stdout]    | ----------------- method `from_error` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     Ok(trys!(ErrorScope, std::str::from_utf8(v)))
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method not found in `ErrorScope`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]    = note: the following trait defines an item `from_error`, perhaps you need to implement it:
[INFO] [stdout]            candidate #1: `FromErrorScope`
[INFO] [stdout]    = note: this error originates in the macro `trys` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `from_error_scope` (example "simple") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "119348ae1a22e9a897bc887c59253c9dd8200f0d9a20ba9d35082f14c0365c77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "119348ae1a22e9a897bc887c59253c9dd8200f0d9a20ba9d35082f14c0365c77", kill_on_drop: false }`
[INFO] [stdout] 119348ae1a22e9a897bc887c59253c9dd8200f0d9a20ba9d35082f14c0365c77
[INFO] checking from_error_scope-0.0.1 against try#dae34b759e282c069aa28752564694effd121a63 for pr-125384
[INFO] extracting crate from_error_scope 0.0.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate from_error_scope 0.0.1 on toolchain dae34b759e282c069aa28752564694effd121a63
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate from_error_scope 0.0.1
[INFO] finished tweaking crates.io crate from_error_scope 0.0.1
[INFO] tweaked toml for crates.io crate from_error_scope 0.0.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d23d5263db516a9fa02e4796cc62b4818db8ae9595c2f2613110a227dad9472d
[INFO] running `Command { std: "docker" "start" "-a" "d23d5263db516a9fa02e4796cc62b4818db8ae9595c2f2613110a227dad9472d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d23d5263db516a9fa02e4796cc62b4818db8ae9595c2f2613110a227dad9472d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d23d5263db516a9fa02e4796cc62b4818db8ae9595c2f2613110a227dad9472d", kill_on_drop: false }`
[INFO] [stdout] d23d5263db516a9fa02e4796cc62b4818db8ae9595c2f2613110a227dad9472d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a09714a00520b3526e0fa69f4c1acdba53e6d9581e3567b30622ba72992a507b
[INFO] running `Command { std: "docker" "start" "-a" "a09714a00520b3526e0fa69f4c1acdba53e6d9581e3567b30622ba72992a507b", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] no edition found in manifest, probably 2015, skipping
[INFO] running `Command { std: "docker" "inspect" "a09714a00520b3526e0fa69f4c1acdba53e6d9581e3567b30622ba72992a507b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a09714a00520b3526e0fa69f4c1acdba53e6d9581e3567b30622ba72992a507b", kill_on_drop: false }`
[INFO] [stdout] a09714a00520b3526e0fa69f4c1acdba53e6d9581e3567b30622ba72992a507b