[INFO] crate semver-trick 0.2.1 is already in cache
[INFO] extracting crate semver-trick 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/semver-trick/0.2.1
[INFO] extracting crate semver-trick 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/semver-trick/0.2.1
[INFO] validating manifest of semver-trick-0.2.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of semver-trick-0.2.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing semver-trick-0.2.1
[INFO] finished frobbing semver-trick-0.2.1
[INFO] frobbed toml for semver-trick-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/semver-trick/0.2.1/Cargo.toml
[INFO] started frobbing semver-trick-0.2.1
[INFO] finished frobbing semver-trick-0.2.1
[INFO] frobbed toml for semver-trick-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/semver-trick/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing semver-trick-0.2.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/semver-trick/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 6fde091bf17444ee824fa5460f7f3ee8d65ed8fe03441353bc13549d4c62d850
[INFO] running `"docker" "start" "-a" "6fde091bf17444ee824fa5460f7f3ee8d65ed8fe03441353bc13549d4c62d850"`
[INFO] [stderr]    Compiling semver-trick v0.3.0
[INFO] [stderr]    Compiling semver-trick v0.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "6fde091bf17444ee824fa5460f7f3ee8d65ed8fe03441353bc13549d4c62d850"`
[INFO] running `"docker" "rm" "-f" "6fde091bf17444ee824fa5460f7f3ee8d65ed8fe03441353bc13549d4c62d850"`
[INFO] [stdout] 6fde091bf17444ee824fa5460f7f3ee8d65ed8fe03441353bc13549d4c62d850
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/semver-trick/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 983efc638ae240b93b1cffdbf9268f2c99f85f8b0aa0bcfd8629f55da68ae2b5
[INFO] running `"docker" "start" "-a" "983efc638ae240b93b1cffdbf9268f2c99f85f8b0aa0bcfd8629f55da68ae2b5"`
[INFO] [stderr]    Compiling semver-trick v0.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "983efc638ae240b93b1cffdbf9268f2c99f85f8b0aa0bcfd8629f55da68ae2b5"`
[INFO] running `"docker" "rm" "-f" "983efc638ae240b93b1cffdbf9268f2c99f85f8b0aa0bcfd8629f55da68ae2b5"`
[INFO] [stdout] 983efc638ae240b93b1cffdbf9268f2c99f85f8b0aa0bcfd8629f55da68ae2b5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/semver-trick/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] b33880ddc51d955698437ab7dfbb449719378659aceec5a32896ddec353367b8
[INFO] running `"docker" "start" "-a" "b33880ddc51d955698437ab7dfbb449719378659aceec5a32896ddec353367b8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/semver_trick-1c74eeb0a9127e34
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests semver-trick
[INFO] [stderr] error[E0465]: multiple rlib candidates for `semver_trick` found
[INFO] [stderr]  --> /opt/crater/workdir/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate semver_trick;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: candidate #1: /opt/crater/target/debug/deps/libsemver_trick-a0d61f30299d02a4.rlib
[INFO] [stderr]  --> /opt/crater/workdir/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate semver_trick;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] note: candidate #2: /opt/crater/target/debug/deps/libsemver_trick-430803f27d465624.rlib
[INFO] [stderr]  --> /opt/crater/workdir/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate semver_trick;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `semver_trick`
[INFO] [stderr]  --> /opt/crater/workdir/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate semver_trick;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "b33880ddc51d955698437ab7dfbb449719378659aceec5a32896ddec353367b8"`
[INFO] running `"docker" "rm" "-f" "b33880ddc51d955698437ab7dfbb449719378659aceec5a32896ddec353367b8"`
[INFO] [stdout] b33880ddc51d955698437ab7dfbb449719378659aceec5a32896ddec353367b8